add arshit
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Ali Furkan Yıldız
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66
shell/bash/arshit/README.md
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shell/bash/arshit/README.md
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# Artix ISO modification helper script (ARSHIT)
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A small bash script to modify already built Artix ISOs
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## Dependencies
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- `bsdtar`
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- `sponge`
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- `perl`
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- `xorriso`
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- `arch-chroot` or `artix-chroot` (falls back to `chroot`)
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- `mksquashfs`
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- `unsquashfs`
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- `md5sum`
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- `bash` (duh)
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- `sudo`
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- `md5sum`
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## Usage
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```
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Usage: ./arshit.sh extract|unsquashfs|mount|umount|mksquashfs|build|update|cleanup
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Usage: ./arshit.sh chroot [program [arguments]]
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Subcommands:
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extract - Extract the ISO to a directory
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unsquashfs - Extract the filesystem
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mount - Mount the filesystem to /tmp/$FS_ROOT
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chroot - Chroot into the filesystem
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umount - Unmount the filesystem
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mksquashfs - Build the filesystem image
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build - Build the ISO
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update - Does all above while updating the system
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cleanup - Removes work directories
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```
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## Configuration
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Configuration is done with environment variables. Export these before using the script or set them each time you use it.
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```sh
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# ISO and working directory name (default: "arshit")
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export ISO_NAME=arshit
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# Where to extract/build the rootfs (default: "$ISO_NAME\_root")
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export FS_ROOT=arshit_root
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# Volume label for the ISO (default: $(echo ${ISO_NAME^^} | cut -c-12))
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export VOLID=ARSHIT
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# Which chroot binary to use (default $(command -v arch-chroot || command -v artix-chroot || command -v chroot))
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# WHEN OVERRIDING WITH CHROOT, USE $(command -v chroot) OR IT WILL NOT MOUNT EVERYTHING
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export CHROOT_COMMAND=<system dependent>
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# Set to '1' to generate a MD5 hash for the filesystem image (default: unset)
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export MD5SUM=
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```
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## Refreshing keys
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From the [wiki](https://wiki.artixlinux.org/Main/Migration#Install_the_Artix_PGP_keyring), but that wont work.
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```sh
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pacman-key --init
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pacman-key --populate artix
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$(curl https://wiki.artixlinux.org/Main/Migration | grep -oP 'pacman-key --lsign-key [0-9A-F]{40}')
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pacman -Sy artix-keyring
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```
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**`./arshit.sh update` does this if needed.**
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129
shell/bash/arshit/arshit.sh
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shell/bash/arshit/arshit.sh
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#!/usr/bin/env bash
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ISO_NAME=${ISO_NAME:-arshit}
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FS_ROOT=${FS_ROOT:-$ISO_NAME\_root}
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VOLID=${VOLID:-$(echo "${ISO_NAME^^}" | cut -c-12)}
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CHROOT_COMMAND=${CHROOT_COMMAND:-$(command -v arch-chroot || command -v artix-chroot || command -v chroot)}
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USES_CHROOT="$(
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[[ "$CHROOT_COMMAND" == "$(command -v chroot)" ]]
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echo $((-$? + 1))
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)"
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print_help() {
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cat << EOF
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Usage: $0 extract|unsquashfs|mount|umount|mksquashfs|build|update|cleanup
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Usage: $0 chroot [program [arguments]]
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Subcommands:
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extract - Extract the ISO to a directory
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unsquashfs - Extract the filesystem
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mount - Mount the filesystem to /tmp/\$FS_ROOT
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chroot - Chroot into the filesystem
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umount - Unmount the filesystem
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mksquashfs - Build the filesystem image
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build - Build the ISO
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update - Does all above while updating the system
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cleanup - Removes work directories
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EOF
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}
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case "$1" in
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extract)
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mkdir -p "$ISO_NAME"
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bsdtar -C "$ISO_NAME" -xf "$ISO_NAME".iso
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sudo chmod -R +w "$ISO_NAME"
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;;
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unsquashfs)
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[ -e "$FS_ROOT" ] && sudo rm -rf "$FS_ROOT"
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sudo unsquashfs -d "$FS_ROOT" "$ISO_NAME"/LiveOS/rootfs.img
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;;
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mount)
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mkdir -p "/tmp/$FS_ROOT"
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sudo mount --bind "$FS_ROOT" "/tmp/$FS_ROOT"
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if [[ "$USES_CHROOT" == 1 ]]; then
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sudo mount --bind /dev "/tmp/$FS_ROOT"/dev
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sudo mount --bind /sys "/tmp/$FS_ROOT"/sys
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sudo mount --bind /proc "/tmp/$FS_ROOT"/proc
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fi
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;;
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chroot)
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# shellcheck disable=SC2086,SC2068
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sudo $CHROOT_COMMAND "/tmp/$FS_ROOT" ${@:2}
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;;
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umount)
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if [[ "$USES_CHROOT" == 1 ]]; then
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sudo umount /tmp/"$FS_ROOT"/dev
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sudo umount "/tmp/$FS_ROOT"/sys
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sudo umount "/tmp/$FS_ROOT"/proc
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fi
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sudo umount "/tmp/$FS_ROOT"
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rm -r "/tmp/$FS_ROOT"
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;;
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mksquashfs)
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sudo mksquashfs "$FS_ROOT" "$ISO_NAME/LiveOS/rootfs.img" -comp zstd -noappend
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[[ "$MD5SUM" == 1 ]] && md5sum "$ISO_NAME"/LiveOS/rootfs.img > \
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"$ISO_NAME"/LiveOS/rootfs.img.md5
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;;
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build)
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perl -pe 's/(?<=label=)[A-Z0-9_]{0,32}(?= |;)/'"$VOLID"'/' <"$ISO_NAME"/boot/grub/kernels.cfg |
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sponge "$ISO_NAME"/boot/grub/kernels.cfg
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sudo xorriso -as mkisofs \
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-volid "$VOLID" \
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--protective-msdos-label -r \
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-graft-points -no-pad \
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--sort-weight 0 / --sort-weight 1 /boot \
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--grub2-mbr "$ISO_NAME"/boot/grub/i386-pc/boot_hybrid.img \
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-b boot/grub/i386-pc/eltorito.img -c boot.catalog \
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-no-emul-boot -boot-load-size 4 \
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-boot-info-table --grub2-boot-info -eltorito-alt-boot \
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-append_partition 2 0xef "$ISO_NAME"/boot/efi.img -no-emul-boot \
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-iso-level 3 \
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-o "$ISO_NAME".iso "$ISO_NAME"
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;;
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cleanup)
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rm -rf "$ISO_NAME"
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sudo rm -rf "$FS_ROOT"
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;;
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update)
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$0 extract
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$0 unsquashfs
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$0 mount
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if $0 chroot [ ! -e /etc/pacman.d/gnupg/trustdb.gpg ]; then
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$0 chroot pacman-key --init
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$0 chroot pacman-key --populate artix
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# Fetch key from wiki
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# shellcheck disable=SC2046
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$0 chroot $(curl https://wiki.artixlinux.org/Main/Migration | grep -oP 'pacman-key --lsign-key [0-9A-F]{40}')
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fi
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$0 chroot pacman -Syu --noconfirm
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$0 umount
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$0 mksquashfs
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$0 build
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$0 cleanup
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;;
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*)
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print_help
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exit 1
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;;
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esac
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exit $?
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