From a94dd8b624776176210a86a3498166f0d9a748d9 Mon Sep 17 00:00:00 2001
From: Molly Lau <windowsbeta@outlook.com>
Date: Tue, 30 May 2023 03:46:01 +0900
Subject: [PATCH] Update motd.sh

---
 Linux_reinstall/Alpine/motd.sh | 203 ++++++++++++++++++++-------------
 1 file changed, 123 insertions(+), 80 deletions(-)

diff --git a/Linux_reinstall/Alpine/motd.sh b/Linux_reinstall/Alpine/motd.sh
index 7af2ece..9f8f9a8 100644
--- a/Linux_reinstall/Alpine/motd.sh
+++ b/Linux_reinstall/Alpine/motd.sh
@@ -1,91 +1,134 @@
-#!/bin/bash
+#!/bin/ash
 #
+# Alpine Linux use "ash" as the default shell.
 
-DISTRIB_DESCRIPTION=`cat /etc/os-release | grep -i "id=" | grep -vi "version\|like\|platform" | cut -d "=" -f2 | sed 's/\"//g' | tr 'A-Z' 'a-z' | sed 's/\b[a-z]/\u&/g'`
+exec >/dev/tty0 2>&1
 
-figlet "$DISTRIB_DESCRIPTION"
-printf "\n"
-printf "Welcome to %s %s (%s)!\n" "$DISTRIB_DESCRIPTION" "$(uname -o)" "$(uname -r) $(uname -m)"
-printf "\n"
-printf "The Alpine Wiki contains a large amount of how-to guides and general"
-printf "\n"
-printf "information about administrating Alpine systems."
-printf "\n"
-printf "See <https://wiki.alpinelinux.org/>."
-printf "\n"
-printf "\n"
-printf "You can setup the system with the command: setup-alpine"
-printf "\n"
-printf "\n"
-printf "You may change this message by editing /etc/profile.d/motd.sh."
-printf "\n"
-printf "\n"
+addCommunityRepo() {
+  alpineVer=$(cut -d. -f1,2 </etc/alpine-release)
+  echo $LinuxMirror/v$alpineVer/community >>/etc/apk/repositories
+}
 
-date=`date`
-load=`cat /proc/loadavg | awk '{print $1}'`
-root_usage=`df -h / | awk '/\// {print $(NF-1)}'`
-memory_usage=`free -m | awk '/Mem:/ { total=$2; used=$3 } END { printf("%3.1f%%", used/total*100)}'`
+# 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
 
-[[ `free -m | awk '/Swap/ {print $2}'` == "0" ]] && swap_usage="0.0%" || swap_usage=`free -m | awk '/Swap/ { printf("%3.1f%%", $3/$2*100) }'`
-users=`users | wc -w`
-time=`uptime | grep -ohe 'up .*' | sed 's/,/\ hours/g' | awk '{ printf $2" "$3 }'`
-processes=`ps aux | wc -l`
-localip=`hostname -i | awk '{print $1}'`
+# Install necessary components.
+apk update
+apk add bash bash bash-doc bash-completion coreutils sed
 
-IPv4=`timeout 0.2s dig -4 TXT +short o-o.myaddr.l.google.com @ns1.google.com | sed 's/\"//g'`
-[[ "$IPv4" == "" ]] && IPv4=`timeout 0.2s dig -4 TXT CH +short whoami.cloudflare @1.0.0.1 | sed 's/\"//g'`
-IPv6=`timeout 0.2s dig -6 TXT +short o-o.myaddr.l.google.com @ns1.google.com | sed 's/\"//g'`
-[[ "$IPv6" == "" ]] && IPv6=`timeout 0.2s dig -6 TXT CH +short whoami.cloudflare @2606:4700:4700::1001 | sed 's/\"//g'`
-# IP_Check=$(echo $IPv4 | awk -F. '$1<255&&$2<255&&$3<255&&$4<255{print "isIPv4"}')
-IP_Check="$IPv4"
-if expr "$IP_Check" : '[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*$' >/dev/null; then
-  for i in 1 2 3 4; do
-    if [ $(echo "$IP_Check" | cut -d. -f$i) -gt 255 ]; then
-      echo "fail ($IP_Check)"
-      exit 1
-    fi
-  done
-  IP_Check="isIPv4"
-fi
+# Get Alpine Linux configurations.
+confFile="/root/alpine.config"
 
-[[ ${IPv6: -1} == ":" ]] && IPv6=$(echo "$IPv6" | sed 's/.$/0/')
-[[ ${IPv6:0:1} == ":" ]] && IPv6=$(echo "$IPv6" | sed 's/^./0/')
-IP6_Check="$IPv6"":"
-IP6_Hex_Num=`echo "$IP6_Check" | tr -cd ":" | wc -c`
-IP6_Hex_Abbr="0"
-if [[ `echo "$IPv6" | grep -i '[[:xdigit:]]' | grep ':'` ]] && [[ "$IP6_Hex_Num" -le "8" ]]; then
-  for ((i=1; i<="$IP6_Hex_Num"; i++)){
-    IP6_Hex=$(echo "$IP6_Check" | cut -d: -f$i)
-    [[ "$IP6_Hex" == "" ]] && IP6_Hex_Abbr=`expr $IP6_Hex_Abbr + 1`
-    [[ `echo "$IP6_Hex" | wc -c` -le "4" ]] && {
-      if [[ `echo "$IP6_Hex" | grep -iE '[^0-9a-f]'` ]] || [[ "$IP6_Hex_Abbr" -gt "1" ]]; then
-        echo "fail ($IP6_Check)"
-        exit 1
-      fi
-    }
-  }
-  IP6_Check="isIPv6"
-fi
+# Read configs from initial file.
+AllDisks=$(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 $2}')
+IPv4=$(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 $2}')
+ip6Gate=$(grep "ip6Gate" $confFile | awk '{print $2}')
+HostName=$(grep "HostName" $confFile | awk '{print $2}')
 
-[[ "${IP6_Check}" != "isIPv6" ]] && IPv6="N/A"
+# Setting Alpine Linux by "setup-alpine" will enable the following services
+# https://github.com/alpinelinux/alpine-conf/blob/c5131e9a038b09881d3d44fb35e86851e406c756/setup-alpine.in#L189
+acpid | default
+crond | default
+seedrng | boot
 
-[[ "${IP_Check}" != "isIPv4" ]] && IPv4="N/A"
+# Add virt-what to community repository
+addCommunityRepo
 
-if [[ "${localip}" == "${IPv4}" ]] || [[ "${localip}" == "${IPv6}" ]] || [[ -z "${localip}" ]] || [[ "${localip}" =~ ":" ]]; then
-  # localip=`ip -o a show | grep -w "lo" | grep -w "inet" | cut -d ' ' -f7 | awk '{split($1, a, "/"); print $2 "" a[1]}'`
-  localip=`cat /etc/hosts | grep "localhost" | sed -n 1p | awk '{print $1}'`
-fi
+# Reset configurations of repositories
+true >/etc/apk/repositories
+setup-apkrepos -1
+setup-apkcache /var/cache/apk
 
-echo " System information as of $date"
-echo
-printf "%-30s%-15s\n" " System Load:" "$load"
-printf "%-30s%-15s\n" " Private IP Address:" "$localip"
-printf "%-30s%-15s\n" " Public IPv4 Address:" "$IPv4"
-printf "%-30s%-15s\n" " Public IPv6 Address:" "$IPv6"
-printf "%-30s%-15s\n" " Memory Usage:" "$memory_usage"
-printf "%-30s%-15s\n" " Usage On /:" "$root_usage"
-printf "%-30s%-15s\n" " Swap Usage:" "$swap_usage"
-printf "%-30s%-15s\n" " Local Users:" "$users"
-printf "%-30s%-15s\n" " Processes:" "$processes"
-printf "%-30s%-15s\n" " System Uptime:" "$time"
-echo
+# Delete comment in the repositories
+sed -i 's/#//' /etc/apk/repositories
+
+# Add edge testing to the repositories
+sed -i '$a\'${AlpineTestRepository}'' /etc/apk/repositories
+
+# Synchronize time from hardware
+hwclock -s
+
+# Install and enable ssh
+echo root:${tmpWORD} | chpasswd
+printf '\nyes' | setup-sshd
+sed -ri 's/^#?Port.*/Port '${sshPORT}'/g' /etc/ssh/sshd_config
+
+# Network configurations.
+# https://wiki.alpinelinux.org/wiki/Configure_Networking
+# Setup adapter.
+setup-interfaces -a
+# Generate network file of "/etc/network/interfaces"
+rc-update add networking boot
+# Delete network file and replace it by us.
+rm -rf /etc/network/interfaces
+mv /etc/network/tmp_interfaces /etc/network/interfaces
+# Static network configurating
+sed -ri 's/IPv4/'${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/'${ip6Gate}'/g' /etc/network/interfaces
+# Restoring access permission.
+chmod a+x /etc/network/interfaces
+# Enable IPv6
+modprobe ipv6
+# Add special IPv6 addresses
+echo "::1             localhost ipv6-localhost ipv6-loopback" >> /etc/hosts
+echo "fe00::0         ipv6-localnet" >> /etc/hosts
+echo "ff00::0         ipv6-mcastprefix" >> /etc/hosts
+echo "ff02::1         ipv6-allnodes" >> /etc/hosts
+echo "ff02::2         ipv6-allrouters" >> /etc/hosts
+echo "ff02::3         ipv6-allhosts" >> /etc/hosts
+# Hostname
+rm -rf /etc/hostname
+echo "$HostName" > /etc/hostname
+hostname -F /etc/hostname
+
+# Localization
+setup-keymap us us
+setup-timezone -i ${TimeZone}
+setup-ntp chrony
+
+# In arm netboot initramfs init,
+# If rtc hardware is detected, add hwclock for system, otherwise add swclock
+# This settings will be copied to the new system
+# But the new system boot from initramfs chroot can detect rtc hardwa1 correctly
+# So we use hwclock manually to fix it
+rc-update del swclock boot
+rc-update add hwclock boot
+
+# Replace "ash" to "bash" as the default shell of the Alpine Linux.
+sed -ri 's/ash/bash/g' /etc/passwd
+
+# Insall more components.
+apk update
+apk add axel bind-tools cpio curl e2fsprogs figlet grep grub gzip hdparm lsblk net-tools parted python3 py3-pip udev util-linux virt-what vim wget
+
+# Vim support copy from terminal.
+alpineVimVer="vim90"
+sed -i 's/set mouse=a/set mouse-=a/g' /usr/share/vim/${alpineVimVer}/defaults.vim
+
+# Use kernel "virt" if be executed on virtual machine
+cp /etc/apk/world /tmp/world.old
+[[ -n "$(virt-what)" ]] && kernelOpt="-k virt"
+
+# Delete the former motd.
+rm -rf /etc/motd
+
+# Install to hard drive.
+export BOOTLOADER="grub"
+printf 'y' | setup-disk -m sys $kernelOpt -s 0 $AllDisks
+
+# Reboot, the system in the memory will all be written to the hard drive.
+exec reboot