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Not too much point specifying -N but not specifying -M.

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This commit is contained in:
Ruslan Ermilov 2004-03-26 09:24:45 +00:00
parent 0b46bb97a7
commit 46fb2e1dbc
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=127448
2 changed files with 12 additions and 14 deletions
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22
sbin/dmesg/dmesg.8
View file

@ -41,22 +41,19 @@
.Sh SYNOPSIS .Sh SYNOPSIS
.Nm .Nm
.Op Fl a .Op Fl a
.Op Fl M Ar core .Op Fl M Ar core Op Fl N Ar system
.Op Fl N Ar system
.Sh DESCRIPTION .Sh DESCRIPTION
The The
.Nm .Nm
utility displays the contents of the system message buffer. utility displays the contents of the system message buffer.
If neither the If the
.Fl N
nor the
.Fl M .Fl M
option is specified, the buffer is read from the currently running kernel option is not specified, the buffer is read from the currently running kernel
via the via the
.Xr sysctl 3 .Xr sysctl 3
interface. interface.
Otherwise, the buffer is read from the specified core file (or from the Otherwise, the buffer is read from the specified core file,
default one), using the name list from the specified kernel image (or from using the name list from the specified kernel image (or from
the default image). the default image).
.Pp .Pp
The options are as follows: The options are as follows:
@ -67,11 +64,12 @@ This includes any syslog records and
.Pa /dev/console .Pa /dev/console
output. output.
.It Fl M .It Fl M
Extract values associated with the name list from the specified core Extract values associated with the name list from the specified core.
instead of the default
.Pa /dev/kmem .
.It Fl N .It Fl N
Extract the name list from the specified system instead of the default, If
.Fl M
is also specified,
extract the name list from the specified system instead of the default,
which is the kernel image the system has booted from. which is the kernel image the system has booted from.
.El .El
.Sh FILES .Sh FILES

4
sbin/dmesg/dmesg.c
View file

@ -105,7 +105,7 @@ main(int argc, char *argv[])
argc -= optind; argc -= optind;
argv += optind; argv += optind;
if (memf == NULL && nlistf == NULL) { if (memf == NULL) {
/* /*
* Running kernel. Use sysctl. This gives an unwrapped * Running kernel. Use sysctl. This gives an unwrapped
* buffer as a side effect. * buffer as a side effect.
@ -196,6 +196,6 @@ main(int argc, char *argv[])
void void
usage(void) usage(void)
{ {
(void)fprintf(stderr, "usage: dmesg [-a] [-M core] [-N system]\n"); (void)fprintf(stderr, "usage: dmesg [-a] [-M core [-N system]]\n");
exit(1); exit(1);
} }