Bootstrapping no.1

The script 1st selects a device, then runs debootstrap and enters chroot. It also copies over the apt cache to the target device. Well it is axtually very crude and doesn't have many choices, like do you want to format the partition, or do you want to copy var cache. Maybe I will update it some time!

See my bootstrapping page for more info.

#!/bin/bash #run as root, pls check through before running it! Use at your own risk. #this script basically helps to automate selecting a device to install on, option format it, then run debootstrap (set here for devuan freia -check for others) before mounting and entering chroot on that device #the script stops there and work can be done in chroot, such as set up apt, fstab, grub2, locales, packages etc - to quit chroot type `exit`and then this script will complete, unmounting everything. #----------------------------------------------------------------------------------------- #set the Target device blkid PS3="Select a partition for the installation - Warning it will be formatted! (type C to cancel): " options=($(ls /sys/class/block | grep -E '^(sd|hd|vd|nvme)[a-z][0-9]+|[0-9]p[0-9]+')) select opt in "${options[@]}"; do if [[ "$REPLY" == [cC] ]]; then echo "Cancelled" && exit 0 elif [[ -n "$opt" ]]; then TGT=/dev/$opt else printf "Invalid option" fi done #----------------------------------------------------------------------------------------- #format target!!! mkfs.ext4 $TGT #----------------------------------------------------------------------------------------- #set target mount TMT=/mnt/target mkdir $TMT mount -t ext4 $TGT $TMT #----------------------------------------------------------------------------------------- #enable use of apt pkgs during bootstrap install stage - if installing stable these pkgs hardly change except for some security updates so they can be copied from your running system, if you are running the same distro as the one intending to install!!! mkdir -p $TMT/var/cache/apt/archives rsync -ar /var/cache/apt/archives/* $TMT/var/cache/apt/archives #or do: mount --bind /var/cache/apt/archives $TMT/var/cache/apt/archives #----------------------------------------------------------------------------------------- #run debootstrap cmd on target device, for devuan release debootstrap --arch amd64 freia $TMT http://deb.devuan.org/merged/ freia #----------------------------------------------------------------------------------------- #copy the chroot commands script over rsync -arult bootstrap_chroot.sh $TMT/tmp #----------------------------------------------------------------------------------------- #copy apt files from running system printf "\n\n.................................Setting up apt on target...." rsync -ar /etc/apt $TMT/etc/ #----------------------------------------------------------------------------------------- #mount local dirs to TMT mount -t proc proc $TMT/proc mount -t sysfs sys $TMT/sys mount -o bind /dev $TMT/dev cp /etc/resolv.conf $TMT/etc/resolv.conf cp /proc/mounts $TMT/etc/mtab #----------------------------------------------------------------------------------------- #check mounts with findmnt printf "\n\n###################################################################################\n# # Is all OK? Look above for errors. # If debootstrap cannot obtain the release file or gpgv can't read it, then debootstrap will fail to install the base system and base directories, # meaning that nothing just specified will mount (errors: mount points do not exist for /proc, /sys and /dev, and resolv.conf and mtab do not exist). \n# ###################################################################################\n \n\nPress Enter if OK, or Q to quit the script" read ans case $ans in [Qq]*) exit 0 ;; esac #----------------------------------------------------------------------------------------- #change root to target chroot $TMT /bin/bash #----------------------------------------------------------------------------------------- #unmounting TMT=/mnt/target umount $TMT/home umount $TMT/sys $TMT/dev $TMT/proc umount /var/cache/apt/archives printf "\n\n.................................All local sys unmounted from target! .................................Target still mounted at $TMT" printf "\n\nUnmount $TMT as well? \n press Enter to unmount press Q and Enter to keep $TMT mounted." read ans case $ans in [Qq]*) exit 0 ;; esac umount $TMT umount $TMT #2nd time to give the not mounted message!