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#!/bin/sh
# My Arch Linux installation script
# by David T. Sadler <davidtsadler@googlemail.com>
# License: GNU GPLv3
### OPTIONS AND VARIABLES ###
while getopts ":p:h" o; do case "${o}" in
h) printf "Optional arguments for custom use:\\n -p: Dependencies and programs csv (local file or url)\\n -h: Show this message\\n" && exit ;;
p) packages=${OPTARG} ;;
*) printf "Invalid option: -%s\\n" "$OPTARG" && exit ;;
esac done
[ -z "$packages" ] && packages="https://raw.githubusercontent.com/davidtsadler/gohan/master/packages.csv"
### FUNCTIONS ###
install_from_pacman() {
pacman --noconfirm --needed -S "$1" >/dev/null 2>&1
}
error() {
clear
printf "ERROR:\\n%s\\n" "$1"
exit
}
welcome_msg() {
dialog --title "Welcome!" --msgbox "Welcome to my Arch Linux installation script!\\n\\nThis script will automatically install a fully-featured Linux desktop, which I use as my main machine.\\n\\n-David" 10 60
dialog --colors --title "Important Note!" --yes-label "All ready!" --no-label "Return..." --yesno "Be sure the computer you are using has current pacman updates.\\n\\nIf it does not, the installation of some programs might fail." 8 70
}
get_username_and_password() {
# Prompts user for new username and password.
name=$(dialog --inputbox "First, please enter a name for the user account." 10 60 3>&1 1>&2 2>&3 3>&1) || exit
while ! echo "$name" | grep "^[a-z_][a-z0-9_-]*$" >/dev/null 2>&1; do
name=$(dialog --no-cancel --inputbox "Username not valid. Give a username beginning with a letter, with only lowercase letters, - or _." 10 60 3>&1 1>&2 2>&3 3>&1)
done
pass1=$(dialog --no-cancel --passwordbox "Enter a password for that user." 10 60 3>&1 1>&2 2>&3 3>&1)
pass2=$(dialog --no-cancel --passwordbox "Retype password." 10 60 3>&1 1>&2 2>&3 3>&1)
while ! [ "$pass1" = "$pass2" ]; do
unset pass2
pass1=$(dialog --no-cancel --passwordbox "Passwords do not match.\\n\\nEnter password again." 10 60 3>&1 1>&2 2>&3 3>&1)
pass2=$(dialog --no-cancel --passwordbox "Retype password." 10 60 3>&1 1>&2 2>&3 3>&1)
done
}
user_check() {
! (id -u "$name" >/dev/null) 2>&1 || dialog --colors --title "WARNING!" --yes-label "CONTINUE" --no-label "No wait..." --yesno "The user \`$name\` already exists on this system. GOHAN can install for a user already existing, but it will \\Zboverwrite\\Zn any conflicting settings/dotfiles on the user account.\\n\\nGOHAN will \\Zbnot\\Zn overwrite your user files, documents, videos, etc., so don't worry about that, but only click <CONTINUE> if you don't mind your settings being overwritten.\\n\\nNote also that GOHAN will change $name's password to the one you just gave." 14 70
}
preinstall_msg() {
dialog --title "Last chance!" --yes-label "Let's go!" --no-label "No, nevermind!" --yesno "Just press <Let's go!> and the system will begin installation!" 13 60 || { clear; exit; }
}
add_user() {
# Adds user `$name` with password $pass1.
dialog --infobox "Adding user \"$name\"..." 4 50
useradd -m -s /bin/bash "$name" >/dev/null 2>&1 || mkdir -p /home/"$name" && chown "$name":"$name" /home/"$name"
[ ! -d "/home/$name/.local/src" ] && mkdir -p "/home/$name/.local/src" && chown -R "$name":"$name" /home/"$name/.local"
echo "$name:$pass1" | chpasswd
unset pass1 pass2
}
install_software() {
([ -f "$packages" ] && cp "$packages" /tmp/packages.csv) || curl -Ls "$packages" > /tmp/packages.csv
total=$(wc -l < /tmp/packages.csv)
while IFS=, read -r tag program comment; do
n=$((n+1))
echo "$comment" | grep "^\".*\"$" >/dev/null 2>&1 && comment="$(echo "$comment" | sed "s/\(^\"\|\"$\)//g")"
case "$tag" in
"G") install_from_github "$program" "$comment" ;;
*) install_package "$program" "$comment" ;;
esac
done < /tmp/packages.csv
}
install_package() {
dialog --title "GOHAN Installation" --infobox "Installing \`$1\` ($n of $total). $1 $2" 5 70
install_from_pacman "$1"
}
install_from_github() {
progname="$(basename "$1" .git)"
repodir="/home/$name/.local/src"
dir="$repodir/$progname"
dialog --title "GOHAN Installation" --infobox "Installing \`$progname\` ($n of $total) via \`git\` and \`make\`. $(basename "$1") $2" 5 70
sudo -u "$name" git clone --depth 1 "$1" "$dir" >/dev/null 2>&1
cd "$dir" || exit
sudo -u "$name" make clean install >/dev/null 2>&1
}
### THE ACTUAL SCRIPT ###
install_from_pacman dialog || error "Are you sure you're running this as the root user and have an internet connection?"
welcome_msg || error "User exited."
get_username_and_password || error "User exited."
user_check || error "User exited."
preinstall_msg || error "User exited."
add_user || error "Error adding username and/or password."
install_software
clear
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