arch-install

#!/usr/bin/env bash

## By Davoud Arsalani
##    https://github.com/davoudarsalani/scripts
##    https://github.com/davoudarsalani/scripts/blob/master/arch-install
##    https://raw.githubusercontent.com/davoudarsalani/scripts/master/arch-install
##    https://davoudarsalani.ir

function display_help {
    local cmd

    cmd="
    -h|--help     help
    -c|--connect  connect to wifi
    -v|--verify   verify if in uefi mode

    -l|--legacy   legacy
    -u|--uefi     uefi (Ermanno Ferrari)"  ## https://ermannoferrari.net/arch-linux-full-install-on-uefi-from-the-terminal-to-productivity
    display_cmd "$cmd"
    exit
}

function display_cmd {
    printf '\e[0;49;90m%s\e[0m\n' "$@" | sed 's/^ *//g'
}

function legacy_fg {
    printf '\e[0;49;34m%s\e[0m\n' "$@"
}

function uefi_fg {
    printf '\e[38;5;64m%s\e[0m\n' "$@"
}

function display_mode {
    "$fg_color" "$mode"
}

function not_valid {
    local msg

    ## NOTE do NOT use (( choice == choice )) to check if choice is a number:
    [ "$choice" -eq "$choice" ] 2>/dev/null && msg='out of range' || msg='not valid'
    printf '%s is %s\n' "$("$fg_color" "$choice")" "$msg"
}

function read_user_choice {
    local space

    for ((i=0; i<"${#main_items[@]}"; i++)); {
        (( i < 10 )) && space='  ' || space=' '
        printf '%s%s%s\n' "$("$fg_color" "$i")" "$space" "${main_items[$i]}" | sed 's/\t/  /g'
    }

    read -p ">>${space}" choice
}

u='nnnn'
runnable='false'

case "$1" in
    -l|--legacy )  ## {{{
        mode='LEGACY'
        fg_color='legacy_fg'
        display_mode
        main_items=(
            'find fastest mirrorlist'
            'partitioning'
            'pacstrap'
            'genfstab'
            'chroot'
            'locale'
            'timedatectl'
            'host/hosts'
            'multilib'
            'sync repos'
            'add user'
            'password'
            'bash* grub'
            'network*'
            'reboot'
            'xorg* awesome lightdm*'
            'reboot'
        )

        read_user_choice

        case "$choice" in
            0 )
                runnable='true'
                cmd="
                ## reflector:  ## JUMP_1
                pacman -Syy
                pacman -S reflector
                cp /etc/pacman.d/{mirrorlist,mirrorlist.bak}
                ## ignore the errors in case it fails to rate some mirrors:
                reflector --country Iran --age 6 --protocol https --sort rate --save /etc/pacman.d/mirrorlist
                pacman -Syy"
                display_cmd "$cmd"
                ;;
            1 )
                cmd="
                lsblk
                cfdisk /dev/sd_ [choose 'dos']

                sd_1 for /      bootable
                sd_2 for home
                sd_3 for swap

                mkfs.ext4 /dev/sd_1
                mount /dev/sd_1 /mnt

                mkfs.ext4 /dev/sd_2
                mkdir /mnt/home
                mount /dev/sd_2 /mnt/home

                mkswap /dev/sd_3
                swapon /dev/sd_3"
                display_cmd "$cmd"
                ;;
            2 )
                ## JUMP_2
                runnable='true'
                cmd="
                pacstrap /mnt base base-devel linux-lts linux-firmware

                ## to be installed manually:
                ## cryptsetup device-mapper dhcpcd diffutils e2fsprogs inetutils jfsutils less linux linux-firmware logrotate
                ## lvm2 man-db man-pages mdadm nano netctl perl reiserfsprogs s-nail sysfsutils texinfo usbutils vi which xfsprogs"
                display_cmd "$cmd"
                ;;
            3 )
                runnable='true'
                cmd="
                genfstab -U /mnt >> /mnt/etc/fstab"
                display_cmd "$cmd"
                ;;
            4 )
                runnable='true'
                cmd="
                arch-chroot /mnt /bin/bash"
                display_cmd "$cmd"
                ;;
            5 )
                ## JUMP_4
                runnable='true'
                cmd="
                sed -i 's/^#en_US\./en_US\./;s/^#fa_IR /fa_IR /' /etc/locale.gen
                locale-gen
                printf 'LANG=en_US.UTF-8\n' > /etc/locale.conf
                export LANG=en_US.UTF-8"
                display_cmd "$cmd"
                ;;
            6 )
                runnable='true'
                cmd="
                ## list time zones:
                # timedatectl list-timezones  ## JUMP_3

                ln -fs /usr/share/zoneinfo/Asia/Tehran /etc/localtime
                hwclock --systohc --utc
                timedatectl set-ntp true"
                display_cmd "$cmd"
                ;;
            7 )
                ## JUMP_5
                runnable='true'
                cmd="
                printf 'acer\n' > /etc/hostname
                printf '127.0.0.1  localhost\n::1  localhost\n127.0.1.1  acer.localdomain  acer\n' > /etc/hosts"
                display_cmd "$cmd"
                ;;
            8 )
                runnable='true'
                ## edit next line after pattern using sed (https://unix.stackexchange.com/questions/285160/how-to-edit-next-line-after-pattern-using-sed)
                cmd="
                sed -i '$!N;s/^#\(\[multilib\]\n\)#\(Include\)/\1\2/;P;D' /etc/pacman.conf"
                display_cmd "$cmd"
                ;;
            9 )
                runnable='true'
                cmd="
                pacman -Sy"
                display_cmd "$cmd"
                ;;
            10 )
                ## JUMP_6
                cmd="
                ## method 1 (recommended):
                useradd -mG wheel -s /bin/bash $u
                EDITOR=vim visudo
                ## uncomment/add this line:
                # %wheel ALL=(ALL) NOPASSWD: ALL

                ## method 2:
                useradd -m -g users -G lp -s /bin/bash $u # also -G lp,autologin,storage,wheel,power
                EDITOR=vim visudo
                ## add '$u ALL=(ALL) NOPASSWD: ALL' under the line 'root = ALL=(ALL) ALL' (without the quotes)

                ## method 3 (Luke Smith version) (www.youtube.com/watch?v=nSHOb8YU9Gw):
                useradd -m -g wheel $u
                EDITOR=vim visudo
                ## add this line:
                %wheel ALL=(ALL) NOPASSWD: ALL
                ## alternatively, you can have these two lines where you specify which commands to be run without asking for a password:
                %wheel ALL=(ALL) ALL
                %wheel ALL=(ALL) NOPASSWD: COMMAND_1, COMMAND_2, COMMAND_3"
                display_cmd "$cmd"
                ;;
            11 )
                cmd="
                passwd
                passwd $u"
                display_cmd "$cmd"
                ;;
            12 )
                cmd="
                pacman -S bash bash-completion grub
                grub-install --recheck --debug --force /dev/sd_
                grub-mkconfig -o /boot/grub/grub.cfg"
                display_cmd "$cmd"
                ;;
            13 )
                cmd="
                pacman -S networkmanager network-manager-applet
                sudo systemctl enable NetworkManager

                ## enable ethernet:
                sudo systemctl enable dhcpcd
                # ip a
                sudo systemctl enable dhcpcd@enp4s0f1"
                display_cmd "$cmd"
                ;;
            14 )
                cmd="
                reboot"
                display_cmd "$cmd"
                ;;
            15 )
                runnable='true'
                cmd="
                sudo pacman -S xorg xorg-xinit xorg-server xorg-apps xorg-drivers xorg-xkill awesome
                # sudo pacman -S lightdm lightdm-gtk-greeter lightdm-gtk-greeter-settings
                # sudo systemctl enable lightdm.service"
                display_cmd "$cmd"
                ;;
            16 )
                cmd="
                reboot"
                ;;
            * )
                not_valid
                ;;
        esac
        ;;
    ## }}}
    -u|--uefi )  ## {{{
        mode='UEFI (Ermanno Ferrari)'
        fg_color='uefi_fg'
        display_mode
        main_items=(
            'timedatectl and find fastest mirrorlist'
            'partitioning'
            'pacstrap'
            'genfstab'
            'chroot'
            'time zone / clock'
            'locale'
            'host/hosts'
            'root password'
            'generate initramfs'
            'grub xorg* awesome bash* efibootmgr networkmanager etc.'
            'grub'
            'enable NetworkManager'
            'add user'
            'user password'
            'umount and reboot'
            'nmtui'
        )

        read_user_choice

        case "$choice" in
            0 )
                runnable='true'
                cmd="
                timedatectl set-ntp true

                ## reflector:  ## JUMP_1
                pacman -Syy
                pacman -S reflector
                cp /etc/pacman.d/{mirrorlist,mirrorlist.bak}
                ## ignore the errors in case it fails to rate some mirrors:
                reflector --country Iran --age 6 --protocol https --sort rate --save /etc/pacman.d/mirrorlist
                pacman -Syy"
                display_cmd "$cmd"
                ;;
            1 )
                cmd="
                lsblk OR lsblk -f
                gdisk /dev/sd_  <<< NOTE do NOT confuse 'gdisk' with 'fdisk'

                ## first, type g to create gpt table, then go on to create partitions

                g  create gpt table     o  create dos/mbr table     n  new partition
                d  delete partition     p  print status             w  write
                a  bootable flag        m  help
                t  change type (1 for efi, 19 for swap [or 82 !], 83 for linux)

                ## +512M for size                   <--,-- uefi
                ## ef00 for Hex[!]                  <--'
                ## 8200 for Hex[!]                  <-- swap
                ## leave Hex/GUID line blank as is  <-- root
                ## leave Hex/GUID line blank as is  <-- home

                sd_1 for uefi
                sd_2 for swap
                sd_3 for /
                sd_4 for home

                mkfs.vfat /dev/sd_1  ## OR mkfs.fat -F 32 /dev/sd_1 (by Arch Wiki)
                mkswap    /dev/sd_2
                swapon    /dev/sd_2
                mkfs.ext4 /dev/sd_3
                mkfs.ext4 /dev/sd_4

                mount /dev/sd_3 /mnt           <-- mount root

                mkdir /mnt/home                <--,-- mount home
                mount /dev/sd_4 /mnt/home      <--'

                mkdir -p /mnt/boot/efi         <--,-- mount efi
                mount /dev/sd_1 /mnt/boot/efi  <--' <-- NOTE mount this last"
                display_cmd "$cmd"
                ;;
            2 )
                ## JUMP_2
                runnable='true'
                cmd="
                pacstrap /mnt base base-devel linux-lts linux-firmware

                ## to be installed manually:
                ## cryptsetup device-mapper dhcpcd diffutils e2fsprogs inetutils jfsutils less linux linux-firmware logrotate
                ## lvm2 man-db man-pages mdadm nano netctl perl reiserfsprogs s-nail sysfsutils texinfo usbutils vi which xfsprogs"
                display_cmd "$cmd"
                ;;
            3 )
                runnable='true'
                cmd="
                genfstab -U /mnt >> /mnt/etc/fstab"
                display_cmd "$cmd"
                ;;
            4 )
                runnable='true'
                cmd="
                arch-chroot /mnt"
                display_cmd "$cmd"
                ;;
            5 )
                runnable='true'
                cmd="
                ## list time zones:
                # timedatectl list-timezones  ## JUMP_3

                ln -fs /usr/share/zoneinfo/Asia/Tehran /etc/localtime
                hwclock --systohc"
                display_cmd "$cmd"
                ;;
            6 )
                ## JUMP_4
                runnable='true'
                cmd="
                sed -i 's/^#en_US\./en_US\./;s/^#fa_IR /fa_IR /' /etc/locale.gen
                locale-gen
                printf 'LANG=en_US.UTF-8\n' > /etc/locale.conf
                export LANG=en_US.UTF-8"
                display_cmd "$cmd"
                ;;
            7 )
                ## JUMP_5
                runnable='true'
                cmd="
                printf 'acer\n' > /etc/hostname
                printf '127.0.0.1  localhost\n::1  localhost\n127.0.1.1  acer.localdomain  acer\n' > /etc/hosts"
                display_cmd "$cmd"
                ;;
            8 )
                cmd="
                passwd"
                display_cmd "$cmd"
                ;;
            9 )
                cmd="
                ## NOTE this was NOT mentioned by Ermanno
                ## Arch Wiki: Creating a new initramfs is usually not required, because mkinitcpio was run on installation of the kernel package with pacstrap.
                mkinitcpio -P OR mkinitcpio -p linux-lts"
                display_cmd "$cmd"
                ;;
            10 )
                runnable='true'
                cmd="
                pacman -S grub xorg xorg-xinit xorg-server xorg-apps xorg-drivers xorg-xkill awesome bash bash-completion efibootmgr linux-headers
                pacman -S networkmanager network-manager-applet nm-connection-editor wireless_tools wpa_supplicant
                # pacman -S xdg-utils xdg-user-dirs mtools dosfstools"
                display_cmd "$cmd"
                ;;
            11 )
                runnable='true'
                cmd="
                grub-install --target=x86_64-efi --efi-directory=/boot/efi --bootloader-id=GRUB
                  ## also (by Stephen): --bootloader-id=GRUB
                  ## also (by Dwix):    [no --efi-directory=/boot/efi] --bootloader-id=grub_uefi --recheck
                grub-mkconfig -o /boot/grub/grub.cfg"
                display_cmd "$cmd"
                ;;
            12 )
                runnable='true'
                cmd="
                systemctl enable NetworkManager"
                display_cmd "$cmd"
                ;;
            13 )
                ## JUMP_6
                cmd="
                ## method 1 (recommended):
                useradd -mG wheel -s /bin/bash $u
                EDITOR=vim visudo
                ## uncomment/add this line:
                # %wheel ALL=(ALL) NOPASSWD: ALL

                ## method 2:
                useradd -m -g users -G lp -s /bin/bash $u # also -G lp,autologin,storage,wheel,power
                EDITOR=vim visudo
                ## add '$u ALL=(ALL) NOPASSWD: ALL' under the line 'root = ALL=(ALL) ALL' (without the quotes)

                ## method 3 (Luke Smith version) (www.youtube.com/watch?v=nSHOb8YU9Gw):
                useradd -m -g wheel $u
                EDITOR=vim visudo
                ## add this line:
                %wheel ALL=(ALL) NOPASSWD: ALL
                ## alternatively, you can have these two lines where you specify ehich commands to be run without asking for a password:
                %wheel ALL=(ALL) ALL
                %wheel ALL=(ALL) NOPASSWD: COMMAND_1, COMMAND_2, COMMAND_3"
                display_cmd "$cmd"
                ;;
            14 )
                cmd="
                passwd $u"
                display_cmd "$cmd"
                ;;
            15 )
                cmd="
                exit
                umount -a
                reboot"
                display_cmd "$cmd"
                ;;
            16 )
                cmd="
                ip a
                nmtui"
                display_cmd "$cmd"
                ;;
            * )
                not_valid
                ;;
        esac
        ;;
    ## }}}
    -c|--connect )  ## {{{
        cmd="
        iwctl
        ## list of devices:
        device list OR station list
        ## get available networks:
        station <DEVCICE> get-networks
        ## connect:
        station <DEVCICE> connect <SSID>
        ## enter password and exit
        exit"
        display_cmd "$cmd"
        ;;
    ## }}}
    -v|--verify )  ## {{{
        runnable='true'
        cmd="
        ls /sys/firmware/efi/efivars 2>/dev/null && printf 'UEFI mode verified: YES\n' || printf 'UEFI mode verified: NO\n'"
        display_cmd "$cmd"
        ;;
    ## }}}
    * )
        display_help
        ;;
esac

if [ "$runnable" == 'true' ]; then
    printf '\n'

    read -p "Run [N/y]? " run_prompt
    [ "${run_prompt,}" == 'y' ] && eval "$cmd"
fi

## {{{ contents of arch-legacy-installation-guide file before turning into this script (providing commands for the legacy mode):
## #!/bin/bash
##
## timedatectl set-ntp true [not sure if necessary]
## pacman -Syy
## pacman -S reflector
## reflector -c Iran -a 6 --sort rate --save /etc/pacman.d/mirrorlist
## pacman -Syy
##
## lsblk
## cfdisk /dev/sdx [choose dos]
##
## #expected outcome:
## sdx1    /       bootable
## sdx2    /home
## sdx3    swap
##
## mkfs.ext4 /dev/sdx1
## mount /dev/sdx1 /mnt
##
## mkfs.ext4 /dev/sdx2
## mkdir /mnt/home
## mount /dev/sdx2 /mnt/home
##
## mkswap /dev/sdx3
## swapon /dev/sdx3
##
## pacstrap -i /mnt base base-devel
## {{{ To be installed manually (https://wiki.archlinux.org/index.php/Talk:Installation_guide#Changes_for_the_base_package):
##   cryptsetup -- indirect dependency of base
##   device-mapper -- indirect dependency of base
##   dhcpcd
##   diffutils
##   e2fsprogs -- indirect dependency of base
##   inetutils
##   jfsutils
##   less -- indirect dependency of base
##   linux
##   linux-firmware
##   logrotate
##   lvm2
##   man-db
##   man-pages
##   mdadm
##   nano
##   netctl
##   perl
##   reiserfsprogs
##   s-nail
##   sysfsutils
##   texinfo
##   usbutils
##   vi
##   which
##   xfsprogs
## }}}
## {{{ packages belonging to base-devel which are currently installed on machine (base base-devel was used during OS installation (installation date: 20190329172200))
##     currentl date: 13990613204649, 20200903204655
##   autoconf
##   automake
##   binutils
##   bison
##   fakeroot
##   file
##   findutils
##   flex
##   gawk
##   gcc
##   gettext
##   grep
##   groff
##   gzip
##   libtool
##   m4
##   make
##   pacman
##   patch
##   pkgconf
##   sed
##   sudo
##   texinfo
##   which
## }}}
##
## genfstab -U /mnt >> /mnt/etc/fstab
##
## arch-chroot /mnt /bin/bash
##
## vim /etc/locale.gen
## #Uncomment these:
## en_US.UTF-8 UTF-8
## fa_IR UTF-8
## (save & exit)
##
## locale-gen
## echo LANG=en_US.UTF-8 > /etc/locale.conf
## export LANG=en_US.UTF-8
##
## ln -fs /usr/share/zoneinfo/Asia/Tehran /etc/localtime
## hwclock --systohc --utc
##
## echo acer > /etc/hostname
##
## vim /etc/hosts
## #write these lines in it:
## 127.0.0.1   localhost
## ::1         localhost
## 127.0.1.1   acer.localdomain    acer
## (save & exit)
##
## vim /etc/pacman.conf
## #uncomment these lines:
## #[multilib]
## #Include = /etc/pacman.d/mirrorlist
## (save & exit)
##
## pacman -Sy
##
## passwd
##
## #------------------------------------
## # Add user
##
## >> method 1:
## useradd -mG wheel -s /bin/bash nnnn
## EDITOR=vim visudo
## #uncomment this line:
## # %wheel ALL=(ALL) NOPASSWD: ALL
##
## >> {{{ method 2:
## useradd -m -g users -G lp -s /bin/bash nnnn # also -G lp,autologin,storage,wheel,power
## EDITOR=vim visudo
## # add "nnnn ALL=(ALL) NOPASSWD: ALL" under the line "root = ALL=(ALL) ALL") (without the quotes)
## (save & exit)
## }}}
##
## >> {{{ method 3 (Luke version) (www.youtube.com/watch?v=nSHOb8YU9Gw):
## useradd -m -g wheel nnnn
## EDITOR=vim visudo
## # Add this line:
## %wheel ALL=(ALL) NOPASSWD: ALL
## # Alternatively, you can have these two lines where you specify the commands to be run without asking for a password:
## %wheel ALL=(ALL) ALL
## %wheel ALL=(ALL) NOPASSWD: <command1>, <command2>, <command3>
## }}}
## (save & exit)
## #------------------------------------
##
## passwd nnnn
##
## pacman -S bash bash-completion grub os-prober[only when dual-booting]
## grub-install --recheck --debug --force /dev/sdx
## grub-mkconfig -o /boot/grub/grub.cfg
##
## pacman -S networkmanager network-manager-applet
## sudo systemctl enable NetworkManager
##
## systemctl enable dhcpcd
## ip a
## systemctl enable dhcpcd@enp4s0f1
##
## exit
## reboot
##
## sudo pacman -S xorg xorg-xinit xorg-server xorg-apps
## sudo pacman -S lightdm
## sudo pacman -S lightdm-gtk-greeter lightdm-gtk-greeter-settings
## sudo systemctl enable lightdm.service
##
## reboot
## }}}