nanodesk/src/root/install_nanodesk.sh

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#!/bin/bash
### installer for nanodesk
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### By: DeltaLima
### 2023
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###
### this is just a hobby, nothing serious. i know the debian installer and other
### exist, but i wanted to try some handcrafted installation.
CHROOTCMD="chroot /mnt/"
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##message () {
## echo "== " $1
##}
# colors for colored output 8)
RED="\e[31m"
GREEN="\e[32m"
YELLOW="\e[33m"
ENDCOLOR="\e[0m"
function message() {
case $1 in
warn)
MESSAGE_TYPE="${YELLOW}WARN${ENDCOLOR}"
;;
error)
MESSAGE_TYPE="${RED}ERROR${ENDCOLOR}"
;;
info|*)
MESSAGE_TYPE="${GREEN}INFO${ENDCOLOR}"
;;
esac
if [ "$1" == "info" ] || [ "$1" == "error" ]
then
MESSAGE=$2
else
MESSAGE=$1
fi
echo -e "[${MESSAGE_TYPE}] $MESSAGE"
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}
error () {
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message error "ERROR!"
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exit 1
}
finish () {
message "removing firststart dialoge from jwm config"
$CHROOTCMD /usr/bin/sed -i '/firstlogin\/welcome/d' /etc/jwm/system.jwmrc || error
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message "removing installer files from target"
$CHROOTCMD /usr/bin/rm -Rf /root/install_nanodesk.sh /root/kernel_deb || error
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message "removing live-packages from target"
$CHROOTCMD /usr/bin/apt -y purge 'live-boot*' 'live-tools*'
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message "autoremove unneeded dependencies"
$CHROOTCMD /usr/bin/apt -y autoremove
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message "we are now ready to boot from $target"
exit 0
}
if [ "$1" == "--help" ] || [ -z "$1" ]
then
echo "Usage: $0 [OPTION] TARGETDEVICE
Example: $0 /dev/sda1
TARGETDEVICE: blockdevice already formatted with filesystem like ext4
Options:
--help: Show this helptext
$0 trys to install grub into the mbr of the given targetdevice.
We simply cut the last character away from the targetdevice,
so /dev/sda1 gets /dev/sda, where grub will be installed."
exit 1
fi
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target="$1"
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if [ ! -b "$target" ]
then
message "$target does not exist or is not a blockdevice."
error
fi
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message " ----==== nanodesk Installer ====----"
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message "Make sure you have a linux compatible filesystem at $target"
message "!! The installer immediately begins to write things to disk !!"
message "!! The installer only works reliable with legacy BIOS boot !!"
message
message "I will mount $target to /mnt/. I try to install grub to ${target::-1}"
message
message "Are you sure to install nanodesk to $target?"
message "To continue type 'YES' and enter, to cancel type anything else or CTRL+C"
read -p "> " DOINSTALL
test "$DOINSTALL" == "YES" || error
message "... GOOD LUCK!"
message "mounting $target to /mnt/"
mount $target /mnt || error
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message "copy systemfiles"
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rsync -aHx / /mnt/ || error
message "bind mount dev proc sys"
for m in dev proc sys
do
mount -o bind /$m /mnt/$m || error
done
message "creating /boot directory"
mkdir -p /mnt/boot/ || error
message "create tmp script for reinstalling grub and kernel"
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cat <<\EOF > /mnt/tmp/reinstall_kernel.sh
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DEBIAN_FRONTEND=noninteractive
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export DEBIAN_FRONTEND
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#/usr/bin/apt --yes purge 'linux-image-*' 'grub-*'
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/usr/bin/apt --yes --reinstall install \
linux-image-amd64 \
linux-image-5.10.0-22-amd64 \
grub-pc grub-pc-bin \
grub-common \
grub2-common \
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os-prober
EOF
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message "install kernel and grub"
$CHROOTCMD /bin/bash /tmp/reinstall_kernel.sh || error
message "modify /etc/default/grub"
$CHROOTCMD /usr/bin/sed -i 's/GRUB_DISTRIBUTOR=.*/GRUB_DISTRIBUTOR=\"nanodesk \`cat \/usr\/share\/nanodesk\/version\`\"/g' /etc/default/grub
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message "grub-install $target"
$CHROOTCMD grub-install ${target::-1} || error
message "create initramfs"
$CHROOTCMD /usr/sbin/update-initramfs.orig.initramfs-tools -k all -c || error
message "update-grub"
$CHROOTCMD /usr/sbin/update-grub || error
message "create fstab"
echo "UUID=$(blkid -o value -s UUID $target) / $(blkid -o value -s TYPE $target) defaults 0 1" >> /mnt/etc/fstab
message "activating swap if present in fstab"
SWAP="$(blkid -o list | grep swap | awk '{print $5}')"
test -n "$SWAP" && echo "UUID=$SWAP none swap defaults 0 0" >> /mnt/etc/fstab
message "Cleanup and create own [U]ser or [K]eep everything as it is?"
read -p "> " USERSTEP
STEPFINISH=0
while [ $STEPFINISH != 1 ]
do
case $USERSTEP in
u|U)
message "please change root pw"
$CHROOTCMD /usr/bin/passwd root || error
message "deleting user 'debian'"
$CHROOTCMD /usr/bin/id -u debian && $CHROOTCMD /usr/sbin/userdel -f debian || error
message "removing user 'debian' from sudoers"
$CHROOTCMD /usr/bin/sed -i '/^debian/d' /etc/sudoers || error
message "please enter a name for a new user"
read -p "> " NEWUSER
$CHROOTCMD /usr/sbin/adduser $NEWUSER || error
message "adding $NEWUSER to sudo group"
$CHROOTCMD /usr/sbin/usermod -G sudo $NEWUSER || error
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$CHROOTCMD /usr/bin/ln -s -f /usr/share/nanodesk/pixmaps/nanodesk-installed.xpm /usr/share/nanodesk/pixmaps/nanodesk.xpm || error
$CHROOTCMD /usr/bin/ln -s -f /usr/share/nanodesk/pixmaps/nanodesk-bw-installed.xpm /usr/share/nanodesk/pixmaps/nanodesk-bw.xpm || error
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STEPFINISH=1
;;
k|K)
finish
;;
esac
done
finish