Advanced users • shrink-backup v1.3 released

Code:

git reset --hardgit pull

Code:

shrink-backup -hScript for creating an .img file and subsequently keeing it updated (-U), autoexpansion is enabled by defaultDirectory where .img file is created is automatically excluded in backup########################################################################Usage: sudo shrink-backup [options] imagefile.img [extra space (MiB)]  -U              Update existing img file (rsync to existing img)                    Optional [extra space] extends img root partition  -a              Autocalculate root size partition, [extra space] is ignored.                    When used in combination with -U:                    Expand if partition is >=256MiB smaller than autocalculated recommended minimum                    Shrink if partition is >=512MiB bigger than autocalculated recommended minimum  -t              Use exclude.txt in same folder as script to set excluded directories                    One directory per line: "/dir" or "/dir/*" to only exclude contents  -y              Disable prompts in script (please use this option with care!)  -e              Disable autoexpansion on root filesystem when image is booted  -l              Write debug messages to logfile shrink-backup.log located in same directory as script  -z              Make script zoom at light-speed, only question prompts might slow it down                    Can be combined with -y for UNSAFE ultra-mega-superduper-speed  -q --quiet      Do not print rsync copy process  --no-color      Run script without color formatted text  --fix           Try to fix the img file if -a fails with a "broken pipe" error                    Will activate rsync options --delete-before & --fsync  --rsync         Define custom rsync line manually. Will print rsync line for user to edit  --loop [img]    Loop img file and exit, works in combination with -l & -z                    If optional [extra space] is defined, the img file will be extended with the amount before looping                    NOTE that only the file gets truncated, no partitions                    Useful if you for example want to manually manage the partitions  --chroot [img]  Use systemd-nspawn. Loop img file, mount to temp directory, enter chroot environment and drop to shell                    This will let you make changes in a chroot environment directly on the img file                    For example update with package manager or rebuild initramfs                    The script will keep running in the background                    Type 'exit' when done. Script will unmount, remove temp directory/loop and exit  --f2fs          Convert root filesystem on img from ext4 to f2fs                    Only works on new img file, not in combination with -U                    Will make backups of fstab & cmdline.txt to: fstab.shrink-backup.bak & cmdline.txt.shrink-backup.bak                    Then change ext4 to f2fs in both files and add discard to options on root partition in fstab  --version      Print version and exit  -h --help      Show this help snippet########################################################################Examples:sudo shrink-backup -a /path/to/backup.img (create img, resize2fs calcualtes size)sudo shrink-backup -e -y /path/to/backup.img 1024 (create img, ignore prompts, do not autoexpand, add 1024MiB extra space)sudo shrink-backup -Utl /path/to/backup.img (update img backup, use exclude.txt and write log to shrink-backup.log)sudo shrink-backup -U /path/to/backup.img 1024 (update img backup, expand img size/root partition with 1024MiB)sudo shrink-backup -Ua /path/to/backup.img (update img backup, resize2fs calculates and resizes img file if needed)sudo shrink-backup -Ua --fix /path/to/backup.img 1024 (update img backup, automatically resizes img file if needed, fix img free space)sudo shrink-backup -l --loop /path/to/backup.img 1024 (write to log file, expand IMG FILE (not partition) by 1024MiB and loop)