Tools/Linux_reinstall/Alpine/alpineInit.sh

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#!/bin/ash
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#
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# Alpine Linux use "ash" as the default shell.
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exec >/dev/tty0 2>&1
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addCommunityRepo() {
alpineVer=$(cut -d. -f1,2 </etc/alpine-release)
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echo $LinuxMirror/v$alpineVer/community >>/etc/apk/repositories
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}
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# Delete the initial script itself to prevent to be executed in the new system.
rm -f /etc/local.d/alpineConf.start
rm -f /etc/runlevels/default/local
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# Install necessary components.
apk update
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apk add bash bash bash-doc bash-completion coreutils sed
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# Get Alpine Linux configurations.
confFile="/root/alpine.config"
# Read configs from initial file.
AllDisks=$(grep "AllDisks" $confFile | awk '{print $2}')
LinuxMirror=$(grep "LinuxMirror" $confFile | awk '{print $2}')
TimeZone=$(grep "TimeZone" $confFile | awk '{print $2}')
tmpWORD=$(grep "tmpWORD" $confFile | awk '{print $2}')
sshPORT=$(grep "sshPORT" $confFile | awk '{print $2}')
AlpineTestRepository=$(grep "AlpineTestRepository" $confFile | awk '{print $2}')
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IPv4=$(grep "IPv4" $confFile | awk '{print $2}')
MASK=$(grep "MASK" $confFile | awk '{print $2}')
GATE=$(grep "GATE" $confFile | awk '{print $2}')
ip6Addr=$(grep "ip6Addr" $confFile | awk '{print $2}')
ip6Mask=$(grep "ip6Mask" $confFile | awk '{print $2}')
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ip6Gate=$(grep "ip6Gate" $confFile | awk '{print $2}')
HostName=$(grep "HostName" $confFile | awk '{print $2}')
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# Setting Alpine Linux by "setup-alpine" will enable the following services
# https://github.com/alpinelinux/alpine-conf/blob/c5131e9a038b09881d3d44fb35e86851e406c756/setup-alpine.in#L189
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acpid | default
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crond | default
seedrng | boot
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# Add virt-what to community repository
addCommunityRepo
# Reset configurations of repositories
true >/etc/apk/repositories
setup-apkrepos -1
setup-apkcache /var/cache/apk
# Delete comment in the repositories
sed -i 's/#//' /etc/apk/repositories
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# Add edge testing to the repositories
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sed -i '$a\'${AlpineTestRepository}'' /etc/apk/repositories
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# Synchronize time from hardware
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hwclock -s
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# Install and enable ssh
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echo root:${tmpWORD} | chpasswd
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printf '\nyes' | setup-sshd
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sed -ri 's/^#?Port.*/Port '${sshPORT}'/g' /etc/ssh/sshd_config
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# Network configurations.
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# https://wiki.alpinelinux.org/wiki/Configure_Networking
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# Setup adapter.
setup-interfaces -a
# Generate network file of "/etc/network/interfaces"
rc-update add networking boot
# Delete network file and replace it by us.
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rm -rf /etc/network/interfaces
mv /etc/network/tmp_interfaces /etc/network/interfaces
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# Static network configurating
sed -ri 's/IPv4/'${IPv4}'/g' /etc/network/interfaces
sed -ri 's/MASK/'${MASK}'/g' /etc/network/interfaces
sed -ri 's/GATE/'${GATE}'/g' /etc/network/interfaces
sed -ri 's/ip6Addr/'${ip6Addr}'/g' /etc/network/interfaces
sed -ri 's/ip6Mask/'${ip6Mask}'/g' /etc/network/interfaces
sed -ri 's/ip6Gate/'${ip6Gate}'/g' /etc/network/interfaces
# Restoring access permission.
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chmod a+x /etc/network/interfaces
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# Enable IPv6
modprobe ipv6
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# Add special IPv6 addresses
echo "::1 localhost ipv6-localhost ipv6-loopback" >> /etc/hosts
echo "fe00::0 ipv6-localnet" >> /etc/hosts
echo "ff00::0 ipv6-mcastprefix" >> /etc/hosts
echo "ff02::1 ipv6-allnodes" >> /etc/hosts
echo "ff02::2 ipv6-allrouters" >> /etc/hosts
echo "ff02::3 ipv6-allhosts" >> /etc/hosts
# Hostname
rm -rf /etc/hostname
echo "$HostName" > /etc/hostname
hostname -F /etc/hostname
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# Localization
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setup-keymap us us
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setup-timezone -i ${TimeZone}
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setup-ntp chrony
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# In arm netboot initramfs init,
# If rtc hardware is detected, add hwclock for system, otherwise add swclock
# This settings will be copied to the new system
# But the new system boot from initramfs chroot can detect rtc hardwa1 correctly
# So we use hwclock manually to fix it
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rc-update del swclock boot
rc-update add hwclock boot
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# Replace "ash" to "bash" as the default shell of the Alpine Linux.
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sed -ri 's/ash/bash/g' /etc/passwd
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# Insall more components.
apk update
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apk add axel bind-tools cpio curl e2fsprogs figlet grep grub gzip hdparm lsblk net-tools parted python3 py3-pip udev util-linux virt-what vim wget
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# Vim support copy from terminal.
alpineVimVer="vim90"
sed -i 's/set mouse=a/set mouse-=a/g' /usr/share/vim/${alpineVimVer}/defaults.vim
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# Use kernel "virt" if be executed on virtual machine
cp /etc/apk/world /tmp/world.old
[[ -n "$(virt-what)" ]] && kernelOpt="-k virt"
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# Delete the former motd.
rm -rf /etc/motd
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# Install to hard drive.
export BOOTLOADER="grub"
printf 'y' | setup-disk -m sys $kernelOpt -s 0 $AllDisks
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# Reboot, the system in the memory will all be written to the hard drive.
exec reboot