borg backup script

home-backup.sh

#!/bin/sh
#
# Daily backup job.
# Belongs in /etc/cron.daily/

# Back up /home partition to /media/backup partition.
SRC=/home/
DEST=/media/backup/bomuhei/
LOG=/media/backup/last_backup.bomuhei

date > $LOG

rsync --archive \
      --verbose \
      --human-readable \
      --delete \
      --delete-excluded \
      --exclude '.Trash/' \
      --exclude '.cache/' \
      --exclude '.gradle/' \
      --exclude '.ivy/' \
      --exclude '.m2/' \
      --exclude '.mozilla/' \
      --exclude 'sonatype-work/' \
$SRC $DEST 2>&1 >> $LOG

date >> $LOG

# Back up to Borg repository
export BORG_REPO=/media/expansion/bomuhei
export BORG_PASSPHRASE='real_password_goes_here'

BORG_LOG=/media/expansion/last_backup.bomuhei

# some helpers and error handling:
info() { printf "\n%s %s\n\n" "$( date )" "$*" >> $BORG_LOG; }
trap 'echo $( date ) Backup interrupted >&2; exit 2' INT TERM

date > $BORG_LOG

borg create \
    --verbose \
    --filter AME \
    --list \
    --stats \
    --show-rc \
    --compression zstd,3 \
    ::'{hostname}-{now}' \
    /media/backup/bomuhei >> $BORG_LOG 2>&1

backup_exit=$?

info "Pruning repository"

borg prune \
    --list \
    --prefix '{hostname}-' \
    --show-rc \
    --keep-daily 8 \
    --keep-weekly 5 \
    --keep-monthly 13 \
    --keep-yearly 10 >> $BORG_LOG 2>&1

prune_exit=$?

# use highest exit code as global exit code
global_exit=$(( backup_exit > prune_exit ? backup_exit : prune_exit ))

if [ ${global_exit} -eq 0 ]; then
    info "Backup and Prune finished successfully"
elif [ ${global_exit} -eq 1 ]; then
    info "Backup and/or Prune finished with warnings"
else
    info "Backup and/or Prune finished with errors"
fi

exit ${global_exit}