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Written by Oleksandr Gavenko (AKA gavenkoa), compiled on 2019-01-03 from rev c44e4331713c.

Alpine Linux distro

Init system

Manage run levels:

rc-update add $SERVICE $LEVEL
rc-update del $SERVICE $LEVEL

Run levels meaning:

Starting/stopping services:

rc-service $SERVICE status
rc-service $SERVICE start
rc-service $SERVICE stop
rc-service $SERVICE restart

Equivalent to shutdown -r now from traditional GNU/Linux systems:

reboot

Equivalent to shutdown -h now from traditional GNU/Linux systems:

halt

To turn off the machine:

poweroff
https://wiki.alpinelinux.org/wiki/Alpine_Linux_Init_System
Alpine Linux Init System

Package manager

Update local package database:

$ sudo apk update

Upgrade packages to latest version:

$ sudo apk upgrade

Upgrade only specific package:

$ sudo apk add -u busybox

Install package:

$ sudo apk add bash

Install local package:

$ sudo apk add --allow-untrusted /path/to/file.apk

To install package from specific Alpine release tag extra repository URL in /etc/apk/repositories:

@edge http://nldl-cdn.alpinelinux.org/alpine/edge/main

and pin dependencies to tag:

$ sudo apk add bash@edge

To avoid registering repository in /etc/apk/repositories pass repository URL and fixate package version:

$ sudo apk add postgresql==9.6.10-r0 --no-cache --repository=http://dl-cdn.alpinelinux.org/alpine/v3.6/main

To select Alpine release, package and package version use https://pkgs.alpinelinux.org/packages

Do not grab package index with --no-cache option to reduce installation size:

$ apk add --no-cache bash

Remove package:

$ sudo apk del openssh

Search for packages:

$ apk search 'emacs*'
$ apk search -v 'emacs*'

List of installed packages:

$ apk info

Package owning file:

$ apk info --who-owns `which apk`

Show package content:

$ apk info -L  $PKG

Developing Apline

$ apk add -U build-base
$ apk add -U alpine-sdk