Alpine Linux package management
Alpine package management
Alpine has the following tools for package management:
All of these commands have a -h option, which will give you the different options they support.
After you booted into Alpine you have a very minimal linux install, so you might want to start installing packages. Use the following command, to install ssh:
% apk_add openssh
As you can see dependencies are automatically pulled in.
Sometimes you would like to see what would get installed if you install a package, or what dependencies would be pulled in by the package. You can see this using:
% apk_add -n openssh
Removing packages is done using:
% apk_delete openssh
To remove a package plus it's dependencies, use:
% apk_delete -R openssh
Even more dangerous is:
% apk_delete -r openssl
which will delete openssl plus all packages that depend on it.
Since removing packages (recursively) can seriously damage your system, it is best to use:
% apk_delete -n openssh
Which will not really remove the package, but just show what it would do.
Looking for packages?
To see the packages available in the repository, use:
% apk_fetch -l
Or you might use:
% apk_fetch -l -v
Which will also show the version number of the available packages.
If the text scrolls by too fast you can use:
% apk_fetch -l | less
Info about your packages
There are several other commands that give more information about the packages installed on your system.
To see the contents of a certain package, use:
% apk_info -L openssh
To see the size of a package, use:
% apk_info -s openssh
To see all packages that depend on a package, eg zlib:
% apk_glob -r zlib
To find out to what package a certain file or directory belongs to, eg /etc/shorewall:
% apk_info -W /etc/shorewall
The easiest way to upgrade alpine is to safe your settings to floppy or usb-key and reboot using a new CD. But there are several other possibilities a well:
- Change the CD, but do not reboot
- Update over network
Changing the CD, no reboot
First update the package list:
% apk_fetch -u
Check what packages have changed version numbers
% apk_version -v
% apk_version -v -l '<'
Will show you what packages needs to be updated
The first thing to check is whether the apk-tools need to be upgraded, if so, always do this first:
% apk_add -u apk-tools
Now it is time to upgrade the other packages:
% apk_version -q -l '<' | xargs apk_add -u
After your upgrade you might find some apk-new files in /etc,these are upgraded config files. A simple utility to go over these files is:
% update-conf -l
Update over network
This is about the same as the previous entry. The key-difference is that we will change the install-source for apk. This can be done in two ways, on the command-line, using export or changing an /etc file:
% export APK_PATH=http://dev.alpinelinux.org/alpine/v1.4/apks/
or edit apk.conf, and add your requested resource.
% vi /etc/apk.conf
You can use sources from:
- rsync (remember that rsync has to be installed before you can use this! (% apk_add rsync))
After you made this change, continue as the cd-rom upgrade with, etc
% apk_fetch -u