knowledge/technology/applications/package managers/alpine/apk.md

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APK

APK is a package manager used on Alpine Linux.

Software packages for Alpine Linux are digitally signed tar.gz archives containing programs, configuration files, and dependency metadata. They have the extension .apk, and are often called "a-packs".

The packages are stored in one or more repositories. A repository is simply a directory with a collection of *.apk files. The directory must include a special index file, named APKINDEX.tar.gz to be considered a repository.

The apk utility can install packages from multiple repositories. The list of repositories to check is stored in /etc/apk/repositories, one repository per line.

Usage

apk add

Add packages to WORLD and commit changes
Usage: apk add [<OPTIONS>...] PACKAGES...

Options

Option	Description
-i, --interactive	Ask confirmation
-p, --root ROOT	Manage file system at ROOT
-U, --update-cache	Update package cache
-X, --repository REPO	Specify additional package repository
--allow-untrusted	Install packages with untrusted signature or no signature
--arch ARCH	Temporarily override architecture
--no-cache	Do not use any local cache path
--no-check-certificate	Do not validate the HTTPS server certificates
-s, --simulate	Simulate the requested operation without making any changes

apk del

Remove packages from WORLD and commit changes

Options

Option	Description
-i, --interactive	Ask confirmation
-p, --root ROOT	Manage file system at ROOT
-X, --repository REPO	Specify additional package repository
--arch ARCH	Temporarily override architecture

apk update

Update repository indexes

apk upgrade

Install upgrades available from repositories

Options

Option	Description
-i, --interactive	Ask confirmation
-p, --root ROOT	Manage file system at ROOT
-U, --update-cache	Update package cache
-X, --repository REPO	Specify additional package repository
--allow-untrusted	Install packages with untrusted signature or no signature
--arch ARCH	Temporarily override architecture
--no-cache	Do not use any local cache path
--no-check-certificate	Do not validate the HTTPS server certificates
-s, --simulate	Simulate the requested operation without making any changes

apk cache

Manage local package cache by removing obsolete packages, or downloading missing or newer packages from the repositories.
Usage:

apk cache [<OPTIONS>...] clean
apk cache [<OPTIONS>...] download [DEPENDENCY...]
apk cache [<OPTIONS>...] purge
apk cache [<OPTIONS>...] sync [DEPENDENCY...]

apk info

Give detailed information about packages or repositories

Options

Option	Description
-a, --all	List all information known about the package
-d, --description	Print the package description
-e, --installed	Check package installed status
-L, --contents	List files included in the package
-P, --provides	List what the package provides
-r, --rdepends	List reverse dependencies of the package (all other packages which depend on the package)
-R, --depends	List the dependencies of the package
-s, --size	Print the package's installed size
-w, --webpage	Print the URL for the package's upstream webpage

apk list

List packages matching a pattern or other criteria
Usage: apk list [<OPTIONS>...] PATTERN...

Options

Option	Description
-I, --installed	Consider only installed packages
-O, --orphaned	Consider only orphaned packages
-a, --available	Consider only available packages
-u, --upgradable, --upgradeable	Consider only upgradable packages
-o, --origin	List packages by origin
-d, --depends	List packages by dependency
-P, --providers	List packages by provider

apk search

Search for packages by name or description
Usage: apk search [<OPTIONS>...] PATTERN...

apk fetch

apk fetch downloads the requested packages from the configured package repositories (see repositories) to a local directory. The current working directory is used as the destination directory unless -o is specified.

Options

Option	Description
-l, --link	Create hard links if possible
-o, --output DIR	Write the downloaded file(s) to DIR
-R, --recursive	Fetch packages and all of their dependencies
-s, --stdout	Dump the .apk file(s) to stdout
-w, --world	Download packages needed to satisfy WORLD
--simulate	Simulate the requested operation without making any changes
--url	Print the full URL for downloaded packages

apk manifest

Show checksums of package contents

apk verify

Verify package integrity and signature

apk audit

Audit system for changes

apk stats

Show statistics about repositories and installations