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Review shell scripts

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Signed-off-by: Nikolaos Karaolidis <nick@karaolidis.com>
This commit is contained in:
Nick Karaolidis
2025-01-22 14:07:22 +00:00
parent 8f94687b2b
commit bcbda92c46
27 changed files with 273 additions and 259 deletions
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40
hosts/common/configs/system/backup/backup.sh
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@@ -1,4 +1,4 @@
if [[ "${EUID}" -ne 0 ]]; then
if [[ "$EUID" -ne 0 ]]; then
echo "Please run the script as root."
exit 1
fi
@@ -10,11 +10,11 @@ usage() {
cleanup() {
if [ -d "/persist.bak" ]; then btrfs -q subvolume delete "/persist.bak"; fi
if [ -n "${backup_location}" ]; then rm -f "${backup_location}.tmp"; fi
if [ -n "$backup_location" ]; then rm -f "$backup_location.tmp"; fi
if [ -n "${mount_location}" ]; then
if mount | grep -q "${mount_location}"; then umount "${mount_location}"; fi
if [ -d "${mount_location}" ]; then rmdir "${mount_location}"; fi
if [ -n "$mount_location" ]; then
if mount | grep -q "$mount_location"; then umount "$mount_location"; fi
if [ -d "$mount_location" ]; then rmdir "$mount_location"; fi
fi
}
@@ -25,40 +25,40 @@ mount_location=""
trap cleanup EXIT
while getopts "m:b:" opt; do
case "${opt}" in
m) partition="${OPTARG}" ;;
b) backup_location="${OPTARG}" ;;
case "$opt" in
m) partition="$OPTARG" ;;
b) backup_location="$OPTARG" ;;
*) usage ;;
esac
done
if [ -n "${partition}" ]; then
if [ -n "$partition" ]; then
mount_location=$(mktemp -d /mnt/backup.XXXXXX)
echo "Mounting ${partition} at ${mount_location}..."
mount "${partition}" "${mount_location}"
echo "Mounting $partition at $mount_location..."
mount "$partition" "$mount_location"
fi
if [ -z "${mount_location}" ]; then
if [[ "${backup_location}" != /* ]]; then
backup_location="$(realpath "${backup_location}")"
if [ -z "$mount_location" ]; then
if [[ "$backup_location" != /* ]]; then
backup_location="$(realpath "$backup_location")"
fi
else
if [[ "${backup_location}" = /* ]]; then
if [[ "$backup_location" = /* ]]; then
echo "Error: When a partition is mounted, backup_location must be relative."
exit 1
fi
backup_location="$(realpath "${mount_location}/${backup_location}")"
backup_location="$(realpath "$mount_location/$backup_location")"
fi
backup_location="${backup_location}/$(hostname)-$(date +%Y-%m-%d-%H-%M-%S).btrfs.gz"
backup_location="$backup_location/$(hostname)-$(date +%Y-%m-%d-%H-%M-%S).btrfs.gz"
echo "Creating /persist snapshot..."
btrfs -q subvolume snapshot -r "/persist" "/persist.bak"
echo "Creating backup at ${backup_location}..."
btrfs -q send "/persist.bak" | gzip > "${backup_location}.tmp"
echo "Creating backup at $backup_location..."
btrfs -q send "/persist.bak" | gzip > "$backup_location.tmp"
mv "${backup_location}.tmp" "${backup_location}"
mv "$backup_location.tmp" "$backup_location"
echo "Backup completed successfully!"