systemd/man/systemd-analyze.xml
2024-04-15 10:40:11 +02:00

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<?xml version='1.0'?> <!--*-nxml-*-->
<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
"http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd">
<!-- SPDX-License-Identifier: LGPL-2.1-or-later -->
<refentry id="systemd-analyze" conditional='ENABLE_ANALYZE'
xmlns:xi="http://www.w3.org/2001/XInclude">
<refentryinfo>
<title>systemd-analyze</title>
<productname>systemd</productname>
</refentryinfo>
<refmeta>
<refentrytitle>systemd-analyze</refentrytitle>
<manvolnum>1</manvolnum>
</refmeta>
<refnamediv>
<refname>systemd-analyze</refname>
<refpurpose>Analyze and debug system manager</refpurpose>
</refnamediv>
<refsynopsisdiv>
<cmdsynopsis>
<command>systemd-analyze</command>
<arg choice="opt" rep="repeat">OPTIONS</arg>
<arg>time</arg>
</cmdsynopsis>
<cmdsynopsis>
<command>systemd-analyze</command>
<arg choice="opt" rep="repeat">OPTIONS</arg>
<arg choice="plain">blame</arg>
</cmdsynopsis>
<cmdsynopsis>
<command>systemd-analyze</command>
<arg choice="opt" rep="repeat">OPTIONS</arg>
<arg choice="plain">critical-chain</arg>
<arg choice="opt" rep="repeat"><replaceable>UNIT</replaceable></arg>
</cmdsynopsis>
<cmdsynopsis>
<command>systemd-analyze</command>
<arg choice="opt" rep="repeat">OPTIONS</arg>
<arg choice="plain">dump</arg>
<arg choice="opt" rep="repeat"><replaceable>PATTERN</replaceable></arg>
</cmdsynopsis>
<cmdsynopsis>
<command>systemd-analyze</command>
<arg choice="opt" rep="repeat">OPTIONS</arg>
<arg choice="plain">plot</arg>
<arg choice="opt">>file.svg</arg>
</cmdsynopsis>
<cmdsynopsis>
<command>systemd-analyze</command>
<arg choice="opt" rep="repeat">OPTIONS</arg>
<arg choice="plain">dot</arg>
<arg choice="opt" rep="repeat"><replaceable>PATTERN</replaceable></arg>
<arg choice="opt">>file.dot</arg>
</cmdsynopsis>
<cmdsynopsis>
<command>systemd-analyze</command>
<arg choice="opt" rep="repeat">OPTIONS</arg>
<arg choice="plain">unit-files</arg>
</cmdsynopsis>
<cmdsynopsis>
<command>systemd-analyze</command>
<arg choice="opt" rep="repeat">OPTIONS</arg>
<arg choice="plain">unit-paths</arg>
</cmdsynopsis>
<cmdsynopsis>
<command>systemd-analyze</command>
<arg choice="opt" rep="repeat">OPTIONS</arg>
<arg choice="plain">exit-status</arg>
<arg choice="opt" rep="repeat"><replaceable>STATUS</replaceable></arg>
</cmdsynopsis>
<cmdsynopsis>
<command>systemd-analyze</command>
<arg choice="opt" rep="repeat">OPTIONS</arg>
<arg choice="plain">capability</arg>
<arg choice="opt" rep="repeat"><replaceable>CAPABILITY</replaceable></arg>
</cmdsynopsis>
<cmdsynopsis>
<command>systemd-analyze</command>
<arg choice="opt" rep="repeat">OPTIONS</arg>
<arg choice="plain">condition</arg>
<arg choice="plain"><replaceable>CONDITION</replaceable></arg>
</cmdsynopsis>
<cmdsynopsis>
<command>systemd-analyze</command>
<arg choice="opt" rep="repeat">OPTIONS</arg>
<arg choice="plain">syscall-filter</arg>
<arg choice="opt"><replaceable>SET</replaceable></arg>
</cmdsynopsis>
<cmdsynopsis>
<command>systemd-analyze</command>
<arg choice="opt" rep="repeat">OPTIONS</arg>
<arg choice="plain">filesystems</arg>
<arg choice="opt"><replaceable>SET</replaceable></arg>
</cmdsynopsis>
<cmdsynopsis>
<command>systemd-analyze</command>
<arg choice="opt" rep="repeat">OPTIONS</arg>
<arg choice="plain">calendar</arg>
<arg choice="plain" rep="repeat"><replaceable>SPEC</replaceable></arg>
</cmdsynopsis>
<cmdsynopsis>
<command>systemd-analyze</command>
<arg choice="opt" rep="repeat">OPTIONS</arg>
<arg choice="plain">timestamp</arg>
<arg choice="plain" rep="repeat"><replaceable>TIMESTAMP</replaceable></arg>
</cmdsynopsis>
<cmdsynopsis>
<command>systemd-analyze</command>
<arg choice="opt" rep="repeat">OPTIONS</arg>
<arg choice="plain">timespan</arg>
<arg choice="plain" rep="repeat"><replaceable>SPAN</replaceable></arg>
</cmdsynopsis>
<cmdsynopsis>
<command>systemd-analyze</command>
<arg choice="opt" rep="repeat">OPTIONS</arg>
<arg choice="plain">cat-config</arg>
<arg choice="plain" rep="repeat"><replaceable>NAME</replaceable>|<replaceable>PATH</replaceable></arg>
</cmdsynopsis>
<cmdsynopsis>
<command>systemd-analyze</command>
<arg choice="opt" rep="repeat">OPTIONS</arg>
<arg choice="plain">compare-versions</arg>
<arg choice="plain"><replaceable>VERSION1</replaceable></arg>
<arg choice="opt"><replaceable>OP</replaceable></arg>
<arg choice="plain"><replaceable>VERSION2</replaceable></arg>
</cmdsynopsis>
<cmdsynopsis>
<command>systemd-analyze</command>
<arg choice="opt" rep="repeat">OPTIONS</arg>
<arg choice="plain">verify</arg>
<arg choice="plain" rep="repeat"><replaceable>FILE</replaceable></arg>
</cmdsynopsis>
<cmdsynopsis>
<command>systemd-analyze</command>
<arg choice="opt" rep="repeat">OPTIONS</arg>
<arg choice="plain">security</arg>
<arg choice="opt" rep="repeat"><replaceable>UNIT</replaceable></arg>
</cmdsynopsis>
<cmdsynopsis>
<command>systemd-analyze</command>
<arg choice="opt" rep="repeat">OPTIONS</arg>
<arg choice="plain">inspect-elf</arg>
<arg choice="plain" rep="repeat"><replaceable>FILE</replaceable></arg>
</cmdsynopsis>
<cmdsynopsis>
<command>systemd-analyze</command>
<arg choice="opt" rep="repeat">OPTIONS</arg>
<arg choice="plain">malloc</arg>
<arg choice="opt" rep="repeat"><replaceable>D-BUS SERVICE</replaceable></arg>
</cmdsynopsis>
<cmdsynopsis>
<command>systemd-analyze</command>
<arg choice="opt" rep="repeat">OPTIONS</arg>
<arg choice="plain">fdstore</arg>
<arg choice="plain" rep="repeat"><replaceable>UNIT</replaceable></arg>
</cmdsynopsis>
<cmdsynopsis>
<command>systemd-analyze</command>
<arg choice="opt" rep="repeat">OPTIONS</arg>
<arg choice="plain">image-policy</arg>
<arg choice="plain" rep="repeat"><replaceable>POLICY</replaceable></arg>
</cmdsynopsis>
<cmdsynopsis>
<command>systemd-analyze</command>
<arg choice="opt" rep="repeat">OPTIONS</arg>
<arg choice="plain">pcrs</arg>
<arg choice="opt" rep="repeat"><replaceable>PCR</replaceable></arg>
</cmdsynopsis>
<cmdsynopsis>
<command>systemd-analyze</command>
<arg choice="opt" rep="repeat">OPTIONS</arg>
<arg choice="plain">srk</arg>
<arg choice="opt"><replaceable>&gt;FILE</replaceable></arg>
</cmdsynopsis>
<cmdsynopsis>
<command>systemd-analyze</command>
<arg choice="opt" rep="repeat">OPTIONS</arg>
<arg choice="plain">architectures</arg>
<arg choice="opt" rep="repeat"><replaceable>NAME</replaceable></arg>
</cmdsynopsis>
</refsynopsisdiv>
<refsect1>
<title>Description</title>
<para><command>systemd-analyze</command> may be used to determine
system boot-up performance statistics and retrieve other state and
tracing information from the system and service manager, and to
verify the correctness of unit files. It is also used to access
special functions useful for advanced system manager debugging.</para>
<para>If no command is passed, <command>systemd-analyze
time</command> is implied.</para>
<refsect2>
<title><command>systemd-analyze time</command></title>
<para>This command prints the time spent in the kernel before userspace has been reached, the time
spent in the initrd before normal system userspace has been reached, and the time normal system
userspace took to initialize. Note that these measurements simply measure the time passed up to the
point where all system services have been spawned, but not necessarily until they fully finished
initialization or the disk is idle.</para>
<example>
<title><command>Show how long the boot took</command></title>
<programlisting># in a container
$ systemd-analyze time
Startup finished in 296ms (userspace)
multi-user.target reached after 275ms in userspace
# on a real machine
$ systemd-analyze time
Startup finished in 2.584s (kernel) + 19.176s (initrd) + 47.847s (userspace) = 1min 9.608s
multi-user.target reached after 47.820s in userspace
</programlisting>
</example>
</refsect2>
<refsect2>
<title><command>systemd-analyze blame</command></title>
<para>This command prints a list of all running units, ordered by the time they took to initialize.
This information may be used to optimize boot-up times. Note that the output might be misleading as the
initialization of one service might be slow simply because it waits for the initialization of another
service to complete. Also note: <command>systemd-analyze blame</command> doesn't display results for
services with <varname>Type=simple</varname>, because systemd considers such services to be started
immediately, hence no measurement of the initialization delays can be done. Also note that this command
only shows the time units took for starting up, it does not show how long unit jobs spent in the
execution queue. In particular it shows the time units spent in <literal>activating</literal> state,
which is not defined for units such as device units that transition directly from
<literal>inactive</literal> to <literal>active</literal>. This command hence gives an impression of the
performance of program code, but cannot accurately reflect latency introduced by waiting for
hardware and similar events.</para>
<example>
<title><command>Show which units took the most time during boot</command></title>
<programlisting>$ systemd-analyze blame
32.875s pmlogger.service
20.905s systemd-networkd-wait-online.service
13.299s dev-vda1.device
...
23ms sysroot.mount
11ms initrd-udevadm-cleanup-db.service
3ms sys-kernel-config.mount
</programlisting>
</example>
</refsect2>
<refsect2>
<title><command>systemd-analyze critical-chain <optional><replaceable>UNIT</replaceable>...</optional></command></title>
<para>This command prints a tree of the time-critical chain of units (for each of the specified
<replaceable>UNIT</replaceable>s or for the default target otherwise). The time after the unit is
active or started is printed after the "@" character. The time the unit takes to start is printed after
the "+" character. Note that the output might be misleading as the initialization of services might
depend on socket activation and because of the parallel execution of units. Also, similarly to the
<command>blame</command> command, this only takes into account the time units spent in
<literal>activating</literal> state, and hence does not cover units that never went through an
<literal>activating</literal> state (such as device units that transition directly from
<literal>inactive</literal> to <literal>active</literal>). Moreover it does not show information on
jobs (and in particular not jobs that timed out).</para>
<example>
<title><command>systemd-analyze critical-chain</command></title>
<programlisting>$ systemd-analyze critical-chain
multi-user.target @47.820s
└─pmie.service @35.968s +548ms
└─pmcd.service @33.715s +2.247s
└─network-online.target @33.712s
└─systemd-networkd-wait-online.service @12.804s +20.905s
└─systemd-networkd.service @11.109s +1.690s
└─systemd-udevd.service @9.201s +1.904s
└─systemd-tmpfiles-setup-dev.service @7.306s +1.776s
└─kmod-static-nodes.service @6.976s +177ms
└─systemd-journald.socket
└─system.slice
└─-.slice
</programlisting>
</example>
</refsect2>
<refsect2>
<title><command>systemd-analyze dump [<replaceable>pattern</replaceable>…]</command></title>
<para>Without any parameter, this command outputs a (usually very long) human-readable serialization of
the complete service manager state. Optional glob pattern may be specified, causing the output to be
limited to units whose names match one of the patterns. The output format is subject to change without
notice and should not be parsed by applications. This command is rate limited for unprivileged users.</para>
<example>
<title>Show the internal state of user manager</title>
<programlisting>$ systemd-analyze --user dump
Timestamp userspace: Thu 2019-03-14 23:28:07 CET
Timestamp finish: Thu 2019-03-14 23:28:07 CET
Timestamp generators-start: Thu 2019-03-14 23:28:07 CET
Timestamp generators-finish: Thu 2019-03-14 23:28:07 CET
Timestamp units-load-start: Thu 2019-03-14 23:28:07 CET
Timestamp units-load-finish: Thu 2019-03-14 23:28:07 CET
-> Unit proc-timer_list.mount:
Description: /proc/timer_list
...
-> Unit default.target:
Description: Main user target
...
</programlisting>
</example>
</refsect2>
<refsect2>
<title><command>systemd-analyze malloc [<replaceable>D-Bus service</replaceable>…]</command></title>
<para>This command can be used to request the output of the internal memory state (as returned by
<citerefentry project='man-pages'><refentrytitle>malloc_info</refentrytitle><manvolnum>3</manvolnum></citerefentry>)
of a D-Bus service. If no service is specified, the query will be sent to
<filename>org.freedesktop.systemd1</filename> (the system or user service manager). The output format
is not guaranteed to be stable and should not be parsed by applications.</para>
<para>The service must implement the <filename>org.freedesktop.MemoryAllocation1</filename> interface.
In the systemd suite, it is currently only implemented by the manager.</para>
</refsect2>
<refsect2>
<title><command>systemd-analyze plot</command></title>
<para>This command prints either an SVG graphic, detailing which system services have been started at what
time, highlighting the time they spent on initialization, or the raw time data in JSON or table format.</para>
<example>
<title><command>Plot a bootchart</command></title>
<programlisting>$ systemd-analyze plot >bootup.svg
$ eog bootup.svg&amp;
</programlisting>
</example>
<para>Note that this plot is based on the most recent per-unit timing data of loaded units. This means
that if a unit gets started, then stopped and then started again the information shown will cover the
most recent start cycle, not the first one. Thus it's recommended to consult this information only
shortly after boot, so that this distinction doesn't matter. Moreover, units that are not referenced by
any other unit through a dependency might be unloaded by the service manager once they terminate (and
did not fail). Such units will not show up in the plot.</para>
</refsect2>
<refsect2>
<title><command>systemd-analyze dot [<replaceable>pattern</replaceable>...]</command></title>
<para>This command generates textual dependency graph description in dot format for further processing
with the GraphViz
<citerefentry project='die-net'><refentrytitle>dot</refentrytitle><manvolnum>1</manvolnum></citerefentry>
tool. Use a command line like <command>systemd-analyze dot | dot -Tsvg >systemd.svg</command> to
generate a graphical dependency tree. Unless <option>--order</option> or <option>--require</option> is
passed, the generated graph will show both ordering and requirement dependencies. Optional pattern
globbing style specifications (e.g. <filename>*.target</filename>) may be given at the end. A unit
dependency is included in the graph if any of these patterns match either the origin or destination
node.</para>
<example>
<title>Plot all dependencies of any unit whose name starts with <literal>avahi-daemon</literal>
</title>
<programlisting>$ systemd-analyze dot 'avahi-daemon.*' | dot -Tsvg >avahi.svg
$ eog avahi.svg</programlisting>
</example>
<example>
<title>Plot the dependencies between all known target units</title>
<programlisting>$ systemd-analyze dot --to-pattern='*.target' --from-pattern='*.target' \
| dot -Tsvg >targets.svg
$ eog targets.svg</programlisting>
</example>
</refsect2>
<refsect2>
<title><command>systemd-analyze unit-paths</command></title>
<para>This command outputs a list of all directories from which unit files, <filename>.d</filename>
overrides, and <filename>.wants</filename>, <filename>.requires</filename> symlinks may be
loaded. Combine with <option>--user</option> to retrieve the list for the user manager instance, and
<option>--global</option> for the global configuration of user manager instances.</para>
<example>
<title><command>Show all paths for generated units</command></title>
<programlisting>$ systemd-analyze unit-paths | grep '^/run'
/run/systemd/system.control
/run/systemd/transient
/run/systemd/generator.early
/run/systemd/system
/run/systemd/system.attached
/run/systemd/generator
/run/systemd/generator.late
</programlisting>
</example>
<para>Note that this verb prints the list that is compiled into <command>systemd-analyze</command>
itself, and does not communicate with the running manager. Use
<programlisting>systemctl [--user] [--global] show -p UnitPath --value</programlisting>
to retrieve the actual list that the manager uses, with any empty directories omitted.</para>
</refsect2>
<refsect2>
<title><command>systemd-analyze exit-status <optional><replaceable>STATUS</replaceable>...</optional></command></title>
<para>This command prints a list of exit statuses along with their "class", i.e. the source of the
definition (one of <literal>glibc</literal>, <literal>systemd</literal>, <literal>LSB</literal>, or
<literal>BSD</literal>), see the Process Exit Codes section in
<citerefentry><refentrytitle>systemd.exec</refentrytitle><manvolnum>5</manvolnum></citerefentry>.
If no additional arguments are specified, all known statuses are shown. Otherwise, only the
definitions for the specified codes are shown.</para>
<example>
<title><command>Show some example exit status names</command></title>
<programlisting>$ systemd-analyze exit-status 0 1 {63..65}
NAME STATUS CLASS
SUCCESS 0 glibc
FAILURE 1 glibc
- 63 -
USAGE 64 BSD
DATAERR 65 BSD
</programlisting>
</example>
</refsect2>
<refsect2>
<title><command>systemd-analyze capability <optional><replaceable>CAPABILITY</replaceable>...</optional></command></title>
<para>This command prints a list of Linux capabilities along with their numeric IDs. See <citerefentry
project='man-pages'><refentrytitle>capabilities</refentrytitle><manvolnum>7</manvolnum></citerefentry>
for details. If no argument is specified the full list of capabilities known to the service manager and
the kernel is shown. Capabilities defined by the kernel but not known to the service manager are shown
as <literal>cap_???</literal>. Optionally, if arguments are specified they may refer to specific
cabilities by name or numeric ID, in which case only the indicated capabilities are shown in the
table.</para>
<example>
<title><command>Show some example capability names</command></title>
<programlisting>$ systemd-analyze capability 0 1 {30..32}
NAME NUMBER
cap_chown 0
cap_dac_override 1
cap_audit_control 30
cap_setfcap 31
cap_mac_override 32</programlisting>
</example>
</refsect2>
<refsect2>
<title><command>systemd-analyze condition <replaceable>CONDITION</replaceable>...</command></title>
<para>This command will evaluate <varname index="false">Condition*=...</varname> and
<varname index="false">Assert*=...</varname> assignments, and print their values, and
the resulting value of the combined condition set. See
<citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>
for a list of available conditions and asserts.</para>
<example>
<title>Evaluate conditions that check kernel versions</title>
<programlisting>$ systemd-analyze condition 'ConditionKernelVersion = ! &lt;4.0' \
'ConditionKernelVersion = &gt;=5.1' \
'ConditionACPower=|false' \
'ConditionArchitecture=|!arm' \
'AssertPathExists=/etc/os-release'
test.service: AssertPathExists=/etc/os-release succeeded.
Asserts succeeded.
test.service: ConditionArchitecture=|!arm succeeded.
test.service: ConditionACPower=|false failed.
test.service: ConditionKernelVersion=&gt;=5.1 succeeded.
test.service: ConditionKernelVersion=!&lt;4.0 succeeded.
Conditions succeeded.</programlisting>
</example>
</refsect2>
<refsect2>
<title><command>systemd-analyze syscall-filter <optional><replaceable>SET</replaceable>...</optional></command></title>
<para>This command will list system calls contained in the specified system call set
<replaceable>SET</replaceable>, or all known sets if no sets are specified. Argument
<replaceable>SET</replaceable> must include the <literal>@</literal> prefix.</para>
</refsect2>
<refsect2>
<title><command>systemd-analyze filesystems <optional><replaceable>SET</replaceable>...</optional></command></title>
<para>This command will list filesystems in the specified filesystem set
<replaceable>SET</replaceable>, or all known sets if no sets are specified. Argument
<replaceable>SET</replaceable> must include the <literal>@</literal> prefix.</para>
</refsect2>
<refsect2>
<title><command>systemd-analyze calendar <replaceable>EXPRESSION</replaceable>...</command></title>
<para>This command will parse and normalize repetitive calendar time events, and will calculate when
they elapse next. This takes the same input as the <varname>OnCalendar=</varname> setting in
<citerefentry><refentrytitle>systemd.timer</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
following the syntax described in
<citerefentry><refentrytitle>systemd.time</refentrytitle><manvolnum>7</manvolnum></citerefentry>. By
default, only the next time the calendar expression will elapse is shown; use
<option>--iterations=</option> to show the specified number of next times the expression
elapses. Each time the expression elapses forms a timestamp, see the <command>timestamp</command>
verb below.</para>
<example>
<title>Show leap days in the near future</title>
<programlisting>$ systemd-analyze calendar --iterations=5 '*-2-29 0:0:0'
Original form: *-2-29 0:0:0
Normalized form: *-02-29 00:00:00
Next elapse: Sat 2020-02-29 00:00:00 UTC
From now: 11 months 15 days left
Iter. #2: Thu 2024-02-29 00:00:00 UTC
From now: 4 years 11 months left
Iter. #3: Tue 2028-02-29 00:00:00 UTC
From now: 8 years 11 months left
Iter. #4: Sun 2032-02-29 00:00:00 UTC
From now: 12 years 11 months left
Iter. #5: Fri 2036-02-29 00:00:00 UTC
From now: 16 years 11 months left
</programlisting>
</example>
</refsect2>
<refsect2>
<title><command>systemd-analyze timestamp <replaceable>TIMESTAMP</replaceable>...</command></title>
<para>This command parses a timestamp (i.e. a single point in time) and outputs the normalized form and
the difference between this timestamp and now. The timestamp should adhere to the syntax documented in
<citerefentry><refentrytitle>systemd.time</refentrytitle><manvolnum>7</manvolnum></citerefentry>,
section "PARSING TIMESTAMPS".</para>
<example>
<title>Show parsing of timestamps</title>
<programlisting>$ systemd-analyze timestamp yesterday now tomorrow
Original form: yesterday
Normalized form: Mon 2019-05-20 00:00:00 CEST
(in UTC): Sun 2019-05-19 22:00:00 UTC
UNIX seconds: @15583032000
From now: 1 day 9h ago
Original form: now
Normalized form: Tue 2019-05-21 09:48:39 CEST
(in UTC): Tue 2019-05-21 07:48:39 UTC
UNIX seconds: @1558424919.659757
From now: 43us ago
Original form: tomorrow
Normalized form: Wed 2019-05-22 00:00:00 CEST
(in UTC): Tue 2019-05-21 22:00:00 UTC
UNIX seconds: @15584760000
From now: 14h left
</programlisting>
</example>
</refsect2>
<refsect2>
<title><command>systemd-analyze timespan <replaceable>EXPRESSION</replaceable>...</command></title>
<para>This command parses a time span (i.e. a difference between two timestamps) and outputs the
normalized form and the equivalent value in microseconds. The time span should adhere to the syntax
documented in
<citerefentry><refentrytitle>systemd.time</refentrytitle><manvolnum>7</manvolnum></citerefentry>,
section "PARSING TIME SPANS". Values without units are parsed as seconds.</para>
<example>
<title>Show parsing of timespans</title>
<programlisting>$ systemd-analyze timespan 1s 300s '1year 0.000001s'
Original: 1s
μs: 1000000
Human: 1s
Original: 300s
μs: 300000000
Human: 5min
Original: 1year 0.000001s
μs: 31557600000001
Human: 1y 1us
</programlisting>
</example>
</refsect2>
<refsect2>
<title><command>systemd-analyze cat-config</command>
<replaceable>NAME</replaceable>|<replaceable>PATH</replaceable>...</title>
<para>This command is similar to <command>systemctl cat</command>, but operates on config files. It
will copy the contents of a config file and any drop-ins to standard output, using the usual systemd
set of directories and rules for precedence. Each argument must be either an absolute path including
the prefix (such as <filename>/etc/systemd/logind.conf</filename> or
<filename>/usr/lib/systemd/logind.conf</filename>), or a name relative to the prefix (such as
<filename>systemd/logind.conf</filename>).</para>
<example>
<title>Showing logind configuration</title>
<programlisting>$ systemd-analyze cat-config systemd/logind.conf
# /etc/systemd/logind.conf
...
[Login]
NAutoVTs=8
...
# /usr/lib/systemd/logind.conf.d/20-test.conf
... some override from another package
# /etc/systemd/logind.conf.d/50-override.conf
... some administrator override
</programlisting>
</example>
</refsect2>
<refsect2>
<title><command>systemd-analyze compare-versions
<replaceable>VERSION1</replaceable>
<optional><replaceable>OP</replaceable></optional>
<replaceable>VERSION2</replaceable></command></title>
<para>This command has two distinct modes of operation, depending on whether the operator
<replaceable>OP</replaceable> is specified.</para>
<para>In the first mode — when <replaceable>OP</replaceable> is not specified — it will compare the two
version strings and print either <literal><replaceable>VERSION1</replaceable> &lt;
<replaceable>VERSION2</replaceable></literal>, or <literal><replaceable>VERSION1</replaceable> ==
<replaceable>VERSION2</replaceable></literal>, or <literal><replaceable>VERSION1</replaceable> &gt;
<replaceable>VERSION2</replaceable></literal> as appropriate.</para>
<para>The exit status is <constant>0</constant> if the versions are equal, <constant>11</constant> if
the version of the right is smaller, and <constant>12</constant> if the version of the left is
smaller. (This matches the convention used by <command>rpmdev-vercmp</command>.)</para>
<para>In the second mode — when <replaceable>OP</replaceable> is specified — it will compare the two
version strings using the operation <replaceable>OP</replaceable> and return <constant>0</constant>
(success) if they condition is satisfied, and <constant>1</constant> (failure)
otherwise. <constant>OP</constant> may be <command>lt</command>, <command>le</command>,
<command>eq</command>, <command>ne</command>, <command>ge</command>, <command>gt</command>. In this
mode, no output is printed.
(This matches the convention used by
<citerefentry project='die-net'><refentrytitle>dpkg</refentrytitle><manvolnum>1</manvolnum></citerefentry>
<option>--compare-versions</option>.)</para>
<example>
<title>Compare versions of a package</title>
<programlisting>
$ systemd-analyze compare-versions systemd-250~rc1.fc36.aarch64 systemd-251.fc36.aarch64
systemd-250~rc1.fc36.aarch64 &lt; systemd-251.fc36.aarch64
$ echo $?
12
$ systemd-analyze compare-versions 1 lt 2; echo $?
0
$ systemd-analyze compare-versions 1 ge 2; echo $?
1
</programlisting>
</example>
</refsect2>
<refsect2>
<title><command>systemd-analyze verify <replaceable>FILE</replaceable>...</command></title>
<para>This command will load unit files and print warnings if any errors are detected. Files specified
on the command line will be loaded, but also any other units referenced by them. A unit's name on disk
can be overridden by specifying an alias after a colon; see below for an example. The full unit search
path is formed by combining the directories for all command line arguments, and the usual unit load
paths. The variable <varname>$SYSTEMD_UNIT_PATH</varname> is supported, and may be used to replace or
augment the compiled in set of unit load paths; see
<citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>. All
units files present in the directories containing the command line arguments will be used in preference
to the other paths.</para>
<para>The following errors are currently detected:</para>
<itemizedlist>
<listitem><para>unknown sections and directives,</para></listitem>
<listitem><para>missing dependencies which are required to start the given unit,</para></listitem>
<listitem><para>man pages listed in <varname>Documentation=</varname> which are not found in the
system,</para></listitem>
<listitem><para>commands listed in <varname>ExecStart=</varname> and similar which are not found in
the system or not executable.</para></listitem>
</itemizedlist>
<example>
<title>Misspelt directives</title>
<programlisting>$ cat ./user.slice
[Unit]
WhatIsThis=11
Documentation=man:nosuchfile(1)
Requires=different.service
[Service]
Description=x
$ systemd-analyze verify ./user.slice
[./user.slice:9] Unknown lvalue 'WhatIsThis' in section 'Unit'
[./user.slice:13] Unknown section 'Service'. Ignoring.
Error: org.freedesktop.systemd1.LoadFailed:
Unit different.service failed to load:
No such file or directory.
Failed to create user.slice/start: Invalid argument
user.slice: man nosuchfile(1) command failed with code 16
</programlisting>
</example>
<example>
<title>Missing service units</title>
<programlisting>$ tail ./a.socket ./b.socket
==> ./a.socket &lt;==
[Socket]
ListenStream=100
==> ./b.socket &lt;==
[Socket]
ListenStream=100
Accept=yes
$ systemd-analyze verify ./a.socket ./b.socket
Service a.service not loaded, a.socket cannot be started.
Service b@0.service not loaded, b.socket cannot be started.
</programlisting>
</example>
<example>
<title>Aliasing a unit</title>
<programlisting>$ cat /tmp/source
[Unit]
Description=Hostname printer
[Service]
Type=simple
ExecStart=/usr/bin/echo %H
MysteryKey=true
$ systemd-analyze verify /tmp/source
Failed to prepare filename /tmp/source: Invalid argument
$ systemd-analyze verify /tmp/source:alias.service
alias.service:7: Unknown key name 'MysteryKey' in section 'Service', ignoring.
</programlisting>
</example>
</refsect2>
<refsect2>
<title><command>systemd-analyze security <optional><replaceable>UNIT</replaceable>...</optional></command></title>
<para>This command analyzes the security and sandboxing settings of one or more specified service
units. If at least one unit name is specified the security settings of the specified service units are
inspected and a detailed analysis is shown. If no unit name is specified, all currently loaded,
long-running service units are inspected and a terse table with results shown. The command checks for
various security-related service settings, assigning each a numeric "exposure level" value, depending
on how important a setting is. It then calculates an overall exposure level for the whole unit, which
is an estimation in the range 0.0…10.0 indicating how exposed a service is security-wise. High exposure
levels indicate very little applied sandboxing. Low exposure levels indicate tight sandboxing and
strongest security restrictions. Note that this only analyzes the per-service security features systemd
itself implements. This means that any additional security mechanisms applied by the service code
itself are not accounted for. The exposure level determined this way should not be misunderstood: a
high exposure level neither means that there is no effective sandboxing applied by the service code
itself, nor that the service is actually vulnerable to remote or local attacks. High exposure levels do
indicate however that most likely the service might benefit from additional settings applied to
them.</para>
<para>Please note that many of the security and sandboxing settings individually can be circumvented —
unless combined with others. For example, if a service retains the privilege to establish or undo mount
points many of the sandboxing options can be undone by the service code itself. Due to that is
essential that each service uses the most comprehensive and strict sandboxing and security settings
possible. The tool will take into account some of these combinations and relationships between the
settings, but not all. Also note that the security and sandboxing settings analyzed here only apply to
the operations executed by the service code itself. If a service has access to an IPC system (such as
D-Bus) it might request operations from other services that are not subject to the same
restrictions. Any comprehensive security and sandboxing analysis is hence incomplete if the IPC access
policy is not validated too.</para>
<example>
<title>Analyze <filename index="false">systemd-logind.service</filename></title>
<programlisting>$ systemd-analyze security --no-pager systemd-logind.service
NAME DESCRIPTION EXPOSURE
✗ PrivateNetwork= Service has access to the host's network 0.5
✗ User=/DynamicUser= Service runs as root user 0.4
✗ DeviceAllow= Service has no device ACL 0.2
✓ IPAddressDeny= Service blocks all IP address ranges
...
→ Overall exposure level for systemd-logind.service: 4.1 OK 🙂
</programlisting>
</example>
</refsect2>
<refsect2>
<title><command>systemd-analyze inspect-elf <replaceable>FILE</replaceable>...</command></title>
<para>This command will load the specified files, and if they are ELF objects (executables,
libraries, core files, etc.) it will parse the embedded packaging metadata, if any, and print
it in a table or json format. See the <ulink url="https://systemd.io/COREDUMP_PACKAGE_METADATA/">
Packaging Metadata</ulink> documentation for more information.</para>
<example>
<title>Print information about a core file as JSON</title>
<programlisting>$ systemd-analyze inspect-elf --json=pretty \
core.fsverity.1000.f77dac5dc161402aa44e15b7dd9dcf97.58561.1637106137000000
{
"elfType" : "coredump",
"elfArchitecture" : "AMD x86-64",
"/home/bluca/git/fsverity-utils/fsverity" : {
"type" : "deb",
"name" : "fsverity-utils",
"version" : "1.3-1",
"buildId" : "7c895ecd2a271f93e96268f479fdc3c64a2ec4ee"
},
"/home/bluca/git/fsverity-utils/libfsverity.so.0" : {
"type" : "deb",
"name" : "fsverity-utils",
"version" : "1.3-1",
"buildId" : "b5e428254abf14237b0ae70ed85fffbb98a78f88"
}
}
</programlisting>
</example>
</refsect2>
<refsect2>
<title><command>systemd-analyze fdstore <replaceable>UNIT</replaceable>...</command></title>
<para>Lists the current contents of the specified service unit's file descriptor store. This shows
names, inode types, device numbers, inode numbers, paths and open modes of the open file
descriptors. The specified units must have <varname>FileDescriptorStoreMax=</varname> enabled, see
<citerefentry><refentrytitle>systemd.service</refentrytitle><manvolnum>5</manvolnum></citerefentry> for
details.</para>
<example>
<title>Table output</title>
<programlisting>$ systemd-analyze fdstore systemd-journald.service
FDNAME TYPE DEVNO INODE RDEVNO PATH FLAGS
stored sock 0:8 4218620 - socket:[4218620] ro
stored sock 0:8 4213198 - socket:[4213198] ro
stored sock 0:8 4213190 - socket:[4213190] ro
</programlisting>
</example>
<para>Note: the "DEVNO" column refers to the major/minor numbers of the device node backing the file
system the file descriptor's inode is on. The "RDEVNO" column refers to the major/minor numbers of the
device node itself if the file descriptor refers to one. Compare with corresponding
<varname>.st_dev</varname> and <varname>.st_rdev</varname> fields in <type>struct stat</type> (see
<citerefentry
project='man-pages'><refentrytitle>stat</refentrytitle><manvolnum>2</manvolnum></citerefentry> for
details). The listed inode numbers in the "INODE" column are on the file system indicated by
"DEVNO".</para>
</refsect2>
<refsect2>
<title><command>systemd-analyze image-policy <replaceable>POLICY</replaceable></command></title>
<para>This command analyzes the specified image policy string, as per
<citerefentry><refentrytitle>systemd.image-policy</refentrytitle><manvolnum>7</manvolnum></citerefentry>. The
policy is normalized and simplified. For each currently defined partition identifier (as per the <ulink
url="https://uapi-group.org/specifications/specs/discoverable_partitions_specification">Discoverable
Partitions Specification</ulink>) the effect of the image policy string is shown in tabular form.</para>
<example>
<title>Example Output</title>
<programlisting>$ systemd-analyze image-policy swap=encrypted:usr=read-only-on+verity:root=encrypted
Analyzing policy: root=encrypted:usr=verity+read-only-on:swap=encrypted
Long form: root=encrypted:usr=verity+read-only-on:swap=encrypted:=unused+absent
PARTITION MODE READ-ONLY GROWFS
root encrypted - -
usr verity yes -
home ignore - -
srv ignore - -
esp ignore - -
xbootldr ignore - -
swap encrypted - -
root-verity ignore - -
usr-verity unprotected yes -
root-verity-sig ignore - -
usr-verity-sig ignore - -
tmp ignore - -
var ignore - -
default ignore - -</programlisting>
</example>
</refsect2>
<refsect2>
<title><command>systemd-analyze pcrs <optional><replaceable>PCR</replaceable></optional></command></title>
<para>This command shows the known TPM2 PCRs along with their identifying names and current values.</para>
<example>
<title>Example Output</title>
<programlisting>$ systemd-analyze pcrs
NR NAME SHA256
0 platform-code bcd2eb527108bbb1f5528409bcbe310aa9b74f687854cc5857605993f3d9eb11
1 platform-config b60622856eb7ce52637b80f30a520e6e87c347daa679f3335f4f1a600681bb01
2 external-code 1471262403e9a62f9c392941300b4807fbdb6f0bfdd50abfab752732087017dd
3 external-config 3d458cfe55cc03ea1f443f1562beec8df51c75e14a9fcf9a7234a13f198e7969
4 boot-loader-code 939f7fa1458e1f7ce968874d908e524fc0debf890383d355e4ce347b7b78a95c
5 boot-loader-config 864c61c5ea5ecbdb6951e6cb6d9c1f4b4eac79772f7fe13b8bece569d83d3768
6 - 3d458cfe55cc03ea1f443f1562beec8df51c75e14a9fcf9a7234a13f198e7969
7 secure-boot-policy 9c905bd9b9891bfb889b90a54c4b537b889cfa817c4389cc25754823a9443255
8 - 0000000000000000000000000000000000000000000000000000000000000000
9 kernel-initrd 9caa29b128113ef42aa53d421f03437be57211e5ebafc0fa8b5d4514ee37ff0c
10 ima 5ea9e3dab53eb6b483b6ec9e3b2c712bea66bca1b155637841216e0094387400
11 kernel-boot 0000000000000000000000000000000000000000000000000000000000000000
12 kernel-config 627ffa4b405e911902fe1f1a8b0164693b31acab04f805f15bccfe2209c7eace
13 sysexts 0000000000000000000000000000000000000000000000000000000000000000
14 shim-policy 0000000000000000000000000000000000000000000000000000000000000000
15 system-identity 0000000000000000000000000000000000000000000000000000000000000000
16 debug 0000000000000000000000000000000000000000000000000000000000000000
17 - ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
18 - ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
19 - ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
20 - ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
21 - ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
22 - ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
23 application-support 0000000000000000000000000000000000000000000000000000000000000000</programlisting>
</example>
</refsect2>
<refsect2>
<title><command>systemd-analyze srk <optional>&gt;<replaceable>FILE</replaceable></optional></command></title>
<para>This command reads the Storage Root Key (SRK) from the TPM2 device, and writes it in marshalled
TPM2B_PUBLIC format to stdout. The output is non-printable data, so it should be redirected to a file
or into a pipe.</para>
<example>
<title>Save the Storage Root Key to <filename>srk.tpm2b_public</filename></title>
<programlisting>systemd-analyze srk &gt;srk.tpm2b_public</programlisting>
</example>
</refsect2>
<refsect2>
<title><command>systemd-analyze architectures <optional><replaceable>NAME</replaceable>...</optional></command></title>
<para>Lists all known CPU architectures, and which ones are native. The listed architecture names are
those <varname>ConditionArchitecture=</varname> supports, see
<citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry> for
details. If architecture names are specified only those specified are listed.</para>
<example>
<title>Table output</title>
<programlisting>$ systemd-analyze architectures
NAME SUPPORT
alpha foreign
arc foreign
arc-be foreign
arm foreign
arm64 foreign
sparc foreign
sparc64 foreign
tilegx foreign
x86 secondary
x86-64 native</programlisting>
</example>
</refsect2>
</refsect1>
<refsect1>
<title>Options</title>
<para>The following options are understood:</para>
<variablelist>
<varlistentry>
<term><option>--system</option></term>
<listitem><para>Operates on the system systemd instance. This
is the implied default.</para>
<xi:include href="version-info.xml" xpointer="v209"/></listitem>
</varlistentry>
<varlistentry>
<term><option>--user</option></term>
<listitem><para>Operates on the user systemd
instance.</para>
<xi:include href="version-info.xml" xpointer="v186"/></listitem>
</varlistentry>
<varlistentry>
<term><option>--global</option></term>
<listitem><para>Operates on the system-wide configuration for
user systemd instance.</para>
<xi:include href="version-info.xml" xpointer="v238"/></listitem>
</varlistentry>
<varlistentry>
<term><option>--order</option></term>
<term><option>--require</option></term>
<listitem><para>When used in conjunction with the <command>dot</command> command (see above),
selects which dependencies are shown in the dependency graph. If <option>--order</option> is passed,
only dependencies of type <varname>After=</varname> or <varname>Before=</varname> are shown.
If <option>--require</option> is passed, only dependencies of type <varname>Requires=</varname>,
<varname>Requisite=</varname>, <varname>BindsTo=</varname>, <varname>Wants=</varname>, and
<varname>Conflicts=</varname> are shown. If neither is passed, this shows dependencies of
all these types.</para>
<xi:include href="version-info.xml" xpointer="v198"/></listitem>
</varlistentry>
<varlistentry>
<term><option>--from-pattern=</option></term>
<term><option>--to-pattern=</option></term>
<listitem><para>When used in conjunction with the
<command>dot</command> command (see above), this selects which
relationships are shown in the dependency graph. Both options
require a
<citerefentry project='man-pages'><refentrytitle>glob</refentrytitle><manvolnum>7</manvolnum></citerefentry>
pattern as an argument, which will be matched against the
left-hand and the right-hand, respectively, nodes of a
relationship.</para>
<para>Each of these can be used more than once, in which case
the unit name must match one of the values. When tests for
both sides of the relation are present, a relation must pass
both tests to be shown. When patterns are also specified as
positional arguments, they must match at least one side of the
relation. In other words, patterns specified with those two
options will trim the list of edges matched by the positional
arguments, if any are given, and fully determine the list of
edges shown otherwise.</para>
<xi:include href="version-info.xml" xpointer="v201"/></listitem>
</varlistentry>
<varlistentry>
<term><option>--fuzz=<replaceable>timespan</replaceable></option></term>
<listitem><para>When used in conjunction with the
<command>critical-chain</command> command (see above), also
show units, which finished <replaceable>timespan</replaceable>
earlier, than the latest unit in the same level. The unit of
<replaceable>timespan</replaceable> is seconds unless
specified with a different unit, e.g.
"50ms".</para>
<xi:include href="version-info.xml" xpointer="v203"/></listitem>
</varlistentry>
<varlistentry>
<term><option>--man=no</option></term>
<listitem><para>Do not invoke
<citerefentry project='man-pages'><refentrytitle>man</refentrytitle><manvolnum>1</manvolnum></citerefentry>
to verify the existence of man pages listed in <varname>Documentation=</varname>.</para>
<xi:include href="version-info.xml" xpointer="v235"/></listitem>
</varlistentry>
<varlistentry>
<term><option>--generators</option></term>
<listitem><para>Invoke unit generators, see
<citerefentry><refentrytitle>systemd.generator</refentrytitle><manvolnum>7</manvolnum></citerefentry>.
Some generators require root privileges. Under a normal user, running with
generators enabled will generally result in some warnings.</para>
<xi:include href="version-info.xml" xpointer="v235"/></listitem>
</varlistentry>
<varlistentry>
<term><option>--recursive-errors=<replaceable>MODE</replaceable></option></term>
<listitem><para>Control verification of units and their dependencies and whether
<command>systemd-analyze verify</command> exits with a non-zero process exit status or not. With
<command>yes</command>, return a non-zero process exit status when warnings arise during verification
of either the specified unit or any of its associated dependencies. With <command>no</command>,
return a non-zero process exit status when warnings arise during verification of only the specified
unit. With <command>one</command>, return a non-zero process exit status when warnings arise during
verification of either the specified unit or its immediate dependencies. If this option is not
specified, zero is returned as the exit status regardless whether warnings arise during verification
or not.</para>
<xi:include href="version-info.xml" xpointer="v250"/></listitem>
</varlistentry>
<varlistentry>
<term><option>--root=<replaceable>PATH</replaceable></option></term>
<listitem><para>With <command>cat-config</command>, <command>verify</command>,
<command>condition</command> and <command>security</command> when used with
<option>--offline=</option>, operate on files underneath the specified root path
<replaceable>PATH</replaceable>.</para>
<xi:include href="version-info.xml" xpointer="v239"/></listitem>
</varlistentry>
<varlistentry>
<term><option>--image=<replaceable>PATH</replaceable></option></term>
<listitem><para>With <command>cat-config</command>, <command>verify</command>,
<command>condition</command> and <command>security</command> when used with
<option>--offline=</option>, operate on files inside the specified image path
<replaceable>PATH</replaceable>.</para>
<xi:include href="version-info.xml" xpointer="v250"/></listitem>
</varlistentry>
<xi:include href="standard-options.xml" xpointer="image-policy-open" />
<varlistentry>
<term><option>--offline=<replaceable>BOOL</replaceable></option></term>
<listitem><para>With <command>security</command>, perform an offline security review
of the specified unit files, i.e. does not have to rely on PID 1 to acquire security
information for the files like the <command>security</command> verb when used by itself does.
This means that <option>--offline=</option> can be used with <option>--root=</option> and
<option>--image=</option> as well. If a unit's overall exposure level is above that set by
<option>--threshold=</option> (default value is 100), <option>--offline=</option> will return
an error.</para>
<xi:include href="version-info.xml" xpointer="v250"/></listitem>
</varlistentry>
<varlistentry>
<term><option>--profile=<replaceable>PATH</replaceable></option></term>
<listitem><para>With <command>security</command> <option>--offline=</option>, takes into
consideration the specified portable profile when assessing unit settings.
The profile can be passed by name, in which case the well-known system locations will
be searched, or it can be the full path to a specific drop-in file.</para>
<xi:include href="version-info.xml" xpointer="v250"/></listitem>
</varlistentry>
<varlistentry>
<term><option>--threshold=<replaceable>NUMBER</replaceable></option></term>
<listitem><para>With <command>security</command>, allow the user to set a custom value
to compare the overall exposure level with, for the specified unit files. If a unit's
overall exposure level, is greater than that set by the user, <command>security</command>
will return an error. <option>--threshold=</option> can be used with <option>--offline=</option>
as well and its default value is 100.</para>
<xi:include href="version-info.xml" xpointer="v250"/></listitem>
</varlistentry>
<varlistentry>
<term><option>--security-policy=<replaceable>PATH</replaceable></option></term>
<listitem><para>With <command>security</command>, allow the user to define a custom set of
requirements formatted as a JSON file against which to compare the specified unit file(s)
and determine their overall exposure level to security threats.</para>
<table>
<title>Accepted Assessment Test Identifiers</title>
<tgroup cols='1'>
<colspec colname='directive' />
<thead>
<row>
<entry>Assessment Test Identifier</entry>
</row>
</thead>
<tbody>
<row>
<entry>UserOrDynamicUser</entry>
</row>
<row>
<entry>SupplementaryGroups</entry>
</row>
<row>
<entry>PrivateMounts</entry>
</row>
<row>
<entry>PrivateDevices</entry>
</row>
<row>
<entry>PrivateTmp</entry>
</row>
<row>
<entry>PrivateNetwork</entry>
</row>
<row>
<entry>PrivateUsers</entry>
</row>
<row>
<entry>ProtectControlGroups</entry>
</row>
<row>
<entry>ProtectKernelModules</entry>
</row>
<row>
<entry>ProtectKernelTunables</entry>
</row>
<row>
<entry>ProtectKernelLogs</entry>
</row>
<row>
<entry>ProtectClock</entry>
</row>
<row>
<entry>ProtectHome</entry>
</row>
<row>
<entry>ProtectHostname</entry>
</row>
<row>
<entry>ProtectSystem</entry>
</row>
<row>
<entry>RootDirectoryOrRootImage</entry>
</row>
<row>
<entry>LockPersonality</entry>
</row>
<row>
<entry>MemoryDenyWriteExecute</entry>
</row>
<row>
<entry>NoNewPrivileges</entry>
</row>
<row>
<entry>CapabilityBoundingSet_CAP_SYS_ADMIN</entry>
</row>
<row>
<entry>CapabilityBoundingSet_CAP_SET_UID_GID_PCAP</entry>
</row>
<row>
<entry>CapabilityBoundingSet_CAP_SYS_PTRACE</entry>
</row>
<row>
<entry>CapabilityBoundingSet_CAP_SYS_TIME</entry>
</row>
<row>
<entry>CapabilityBoundingSet_CAP_NET_ADMIN</entry>
</row>
<row>
<entry>CapabilityBoundingSet_CAP_SYS_RAWIO</entry>
</row>
<row>
<entry>CapabilityBoundingSet_CAP_SYS_MODULE</entry>
</row>
<row>
<entry>CapabilityBoundingSet_CAP_AUDIT</entry>
</row>
<row>
<entry>CapabilityBoundingSet_CAP_SYSLOG</entry>
</row>
<row>
<entry>CapabilityBoundingSet_CAP_SYS_NICE_RESOURCE</entry>
</row>
<row>
<entry>CapabilityBoundingSet_CAP_MKNOD</entry>
</row>
<row>
<entry>CapabilityBoundingSet_CAP_CHOWN_FSETID_SETFCAP</entry>
</row>
<row>
<entry>CapabilityBoundingSet_CAP_DAC_FOWNER_IPC_OWNER</entry>
</row>
<row>
<entry>CapabilityBoundingSet_CAP_KILL</entry>
</row>
<row>
<entry>CapabilityBoundingSet_CAP_NET_BIND_SERVICE_BROADCAST_RAW</entry>
</row>
<row>
<entry>CapabilityBoundingSet_CAP_SYS_BOOT</entry>
</row>
<row>
<entry>CapabilityBoundingSet_CAP_MAC</entry>
</row>
<row>
<entry>CapabilityBoundingSet_CAP_LINUX_IMMUTABLE</entry>
</row>
<row>
<entry>CapabilityBoundingSet_CAP_IPC_LOCK</entry>
</row>
<row>
<entry>CapabilityBoundingSet_CAP_SYS_CHROOT</entry>
</row>
<row>
<entry>CapabilityBoundingSet_CAP_BLOCK_SUSPEND</entry>
</row>
<row>
<entry>CapabilityBoundingSet_CAP_WAKE_ALARM</entry>
</row>
<row>
<entry>CapabilityBoundingSet_CAP_LEASE</entry>
</row>
<row>
<entry>CapabilityBoundingSet_CAP_SYS_TTY_CONFIG</entry>
</row>
<row>
<entry>CapabilityBoundingSet_CAP_BPF</entry>
</row>
<row>
<entry>UMask</entry>
</row>
<row>
<entry>KeyringMode</entry>
</row>
<row>
<entry>ProtectProc</entry>
</row>
<row>
<entry>ProcSubset</entry>
</row>
<row>
<entry>NotifyAccess</entry>
</row>
<row>
<entry>RemoveIPC</entry>
</row>
<row>
<entry>Delegate</entry>
</row>
<row>
<entry>RestrictRealtime</entry>
</row>
<row>
<entry>RestrictSUIDSGID</entry>
</row>
<row>
<entry>RestrictNamespaces_user</entry>
</row>
<row>
<entry>RestrictNamespaces_mnt</entry>
</row>
<row>
<entry>RestrictNamespaces_ipc</entry>
</row>
<row>
<entry>RestrictNamespaces_pid</entry>
</row>
<row>
<entry>RestrictNamespaces_cgroup</entry>
</row>
<row>
<entry>RestrictNamespaces_uts</entry>
</row>
<row>
<entry>RestrictNamespaces_net</entry>
</row>
<row>
<entry>RestrictAddressFamilies_AF_INET_INET6</entry>
</row>
<row>
<entry>RestrictAddressFamilies_AF_UNIX</entry>
</row>
<row>
<entry>RestrictAddressFamilies_AF_NETLINK</entry>
</row>
<row>
<entry>RestrictAddressFamilies_AF_PACKET</entry>
</row>
<row>
<entry>RestrictAddressFamilies_OTHER</entry>
</row>
<row>
<entry>SystemCallArchitectures</entry>
</row>
<row>
<entry>SystemCallFilter_swap</entry>
</row>
<row>
<entry>SystemCallFilter_obsolete</entry>
</row>
<row>
<entry>SystemCallFilter_clock</entry>
</row>
<row>
<entry>SystemCallFilter_cpu_emulation</entry>
</row>
<row>
<entry>SystemCallFilter_debug</entry>
</row>
<row>
<entry>SystemCallFilter_mount</entry>
</row>
<row>
<entry>SystemCallFilter_module</entry>
</row>
<row>
<entry>SystemCallFilter_raw_io</entry>
</row>
<row>
<entry>SystemCallFilter_reboot</entry>
</row>
<row>
<entry>SystemCallFilter_privileged</entry>
</row>
<row>
<entry>SystemCallFilter_resources</entry>
</row>
<row>
<entry>IPAddressDeny</entry>
</row>
<row>
<entry>DeviceAllow</entry>
</row>
<row>
<entry>AmbientCapabilities</entry>
</row>
</tbody>
</tgroup>
</table>
<para>See example "JSON Policy" below.</para>
<xi:include href="version-info.xml" xpointer="v250"/></listitem>
</varlistentry>
<varlistentry>
<term><option>--json=<replaceable>MODE</replaceable></option></term>
<listitem><para>With the <command>security</command> command, generate a JSON formatted
output of the security analysis table. The format is a JSON array with objects
containing the following fields: <varname>set</varname> which indicates if the setting has
been enabled or not, <varname>name</varname> which is what is used to refer to the setting,
<varname>json_field</varname> which is the JSON compatible identifier of the setting,
<varname>description</varname> which is an outline of the setting state, and
<varname>exposure</varname> which is a number in the range 0.0…10.0, where a higher value
corresponds to a higher security threat. The JSON version of the table is printed to standard
output. The <replaceable>MODE</replaceable> passed to the option can be one of three:
<option>off</option> which is the default, <option>pretty</option> and <option>short</option>
which respectively output a prettified or shorted JSON version of the security table.
With the <command>plot</command> command, generate a JSON formatted output of the raw time data.
The format is a JSON array with objects containing the following fields: <varname>name</varname>
which is the unit name, <varname>activated</varname> which is the time after startup the
service was activated, <varname>activating</varname> which is how long after startup the service
was initially started, <varname>time</varname> which is how long the service took to activate
from when it was initially started, <varname>deactivated</varname> which is the time after startup
that the service was deactivated, <varname>deactivating</varname> which is the time after startup
that the service was initially told to deactivate.
</para>
<xi:include href="version-info.xml" xpointer="v250"/></listitem>
</varlistentry>
<varlistentry>
<term><option>--iterations=<replaceable>NUMBER</replaceable></option></term>
<listitem><para>When used with the <command>calendar</command> command, show the specified number of
iterations the specified calendar expression will elapse next. Defaults to 1.</para>
<xi:include href="version-info.xml" xpointer="v242"/></listitem>
</varlistentry>
<varlistentry>
<term><option>--base-time=<replaceable>TIMESTAMP</replaceable></option></term>
<listitem><para>When used with the <command>calendar</command> command, show next iterations relative
to the specified point in time. If not specified defaults to the current time.</para>
<xi:include href="version-info.xml" xpointer="v244"/></listitem>
</varlistentry>
<varlistentry>
<term><option>--unit=<replaceable>UNIT</replaceable></option></term>
<listitem><para>When used with the <command>condition</command> command, evaluate all the
<varname index="false">Condition*=...</varname> and <varname index="false">Assert*=...</varname>
assignments in the specified unit file. The full unit search path is formed by combining the
directories for the specified unit with the usual unit load paths. The variable
<varname>$SYSTEMD_UNIT_PATH</varname> is supported, and may be used to replace or augment the
compiled in set of unit load paths; see
<citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>. All
units files present in the directory containing the specified unit will be used in preference to the
other paths.</para>
<xi:include href="version-info.xml" xpointer="v250"/></listitem>
</varlistentry>
<varlistentry>
<term><option>--table</option></term>
<listitem><para>When used with the <command>plot</command> command, the raw time data is output in a table.
</para>
<xi:include href="version-info.xml" xpointer="v253"/></listitem>
</varlistentry>
<varlistentry>
<term><option>--no-legend</option></term>
<listitem><para>When used with the <command>plot</command> command in combination with either
<option>--table</option> or <option>--json=</option>, no legends or hints are included in the output.
</para>
<xi:include href="version-info.xml" xpointer="v253"/></listitem>
</varlistentry>
<xi:include href="user-system-options.xml" xpointer="host" />
<xi:include href="user-system-options.xml" xpointer="machine" />
<varlistentry>
<term><option>-q</option></term>
<term><option>--quiet</option></term>
<listitem><para>Suppress hints and other non-essential output.</para>
<xi:include href="version-info.xml" xpointer="v250"/></listitem>
</varlistentry>
<varlistentry>
<term><option>--tldr</option></term>
<listitem><para>With <command>cat-config</command>, only print the "interesting" parts of the
configuration files, skipping comments and empty lines and section headers followed only by
comments and empty lines.</para>
<xi:include href="version-info.xml" xpointer="v255"/></listitem>
</varlistentry>
<xi:include href="standard-options.xml" xpointer="help" />
<xi:include href="standard-options.xml" xpointer="version" />
<xi:include href="standard-options.xml" xpointer="no-pager" />
</variablelist>
</refsect1>
<refsect1>
<title>Exit status</title>
<para>For most commands, 0 is returned on success, and a non-zero failure code otherwise.</para>
<para>With the verb <command>compare-versions</command>, in the two-argument form,
<constant>12</constant>, <constant>0</constant>, <constant>11</constant> is returned if the second
version string is respectively larger, equal, or smaller to the first. In the three-argument form,
<constant>0</constant> or <constant>1</constant> if the condition is respectively true or false.</para>
</refsect1>
<xi:include href="common-variables.xml" />
<refsect1>
<title>Examples</title>
<example>
<title>JSON Policy</title>
<para>The JSON file passed as a path parameter to <option>--security-policy=</option> has a top-level
JSON object, with keys being the assessment test identifiers mentioned above. The values in the file
should be JSON objects with one or more of the following fields: <option>description_na</option>
(string), <option>description_good</option> (string), <option>description_bad</option> (string),
<option>weight</option> (unsigned integer), and <option>range</option> (unsigned integer). If any of
these fields corresponding to a specific id of the unit file is missing from the JSON object, the
default built-in field value corresponding to that same id is used for security analysis as default.
The weight and range fields are used in determining the overall exposure level of the unit files: the
value of each setting is assigned a badness score, which is multiplied by the policy weight and divided
by the policy range to determine the overall exposure that the setting implies. The computed badness is
summed across all settings in the unit file, normalized to the 1…100 range, and used to determine the
overall exposure level of the unit. By allowing users to manipulate these fields, the 'security' verb
gives them the option to decide for themself which ids are more important and hence should have a
greater effect on the exposure level. A weight of <literal>0</literal> means the setting will not be
checked.</para>
<programlisting>
{
"PrivateDevices":
{
"description_good": "Service has no access to hardware devices",
"description_bad": "Service potentially has access to hardware devices",
"weight": 1000,
"range": 1
},
"PrivateMounts":
{
"description_good": "Service cannot install system mounts",
"description_bad": "Service may install system mounts",
"weight": 1000,
"range": 1
},
"PrivateNetwork":
{
"description_good": "Service has no access to the host's network",
"description_bad": "Service has access to the host's network",
"weight": 2500,
"range": 1
},
"PrivateTmp":
{
"description_good": "Service has no access to other software's temporary files",
"description_bad": "Service has access to other software's temporary files",
"weight": 1000,
"range": 1
},
"PrivateUsers":
{
"description_good": "Service does not have access to other users",
"description_bad": "Service has access to other users",
"weight": 1000,
"range": 1
}
}
</programlisting>
</example>
</refsect1>
<refsect1>
<title>See Also</title>
<para><simplelist type="inline">
<member><citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry></member>
<member><citerefentry><refentrytitle>systemctl</refentrytitle><manvolnum>1</manvolnum></citerefentry></member>
</simplelist></para>
</refsect1>
</refentry>