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|
#!/bin/sh
set -eu
usage() {
cat <<-'EOF'
Usage:
backup [-v] [-C COMMENT] ARCHIVE_TAG
backup -h
EOF
}
help() {
cat <<-'EOF'
Options:
-v enable verbose mode, useful for
interactive sessions
-C COMMENT the comment text to be attached to the archive
-h, --help show this message
ARCHIVE_TAG the tag used to create the new
backup (default: "cronjob")
The repository is expected to have been created with:
$ borg init -e repokey-blake2
The following environment variables are expected to be exported:
$BORG_PASSCOMMAND
$BORG_REPO
$BORG_REMOTE_PATH
Password-less SSH access is required, usually done via adding
~/.ssh/id_rsa.pub to suyin:.ssh/authorized_keys.
Examples:
Run backup from cronjob:
$ backup cronjob
Create backup with comment, and verbose mode active:
$ backup -vC 'The backup has a comment' my-backup
EOF
}
for flag in "$@"; do
case "$flag" in
--)
break
;;
--help)
usage
help
exit
;;
*)
;;
esac
done
VERBOSE_FLAGS=''
COMMENT=''
while getopts 'vC:h' flag; do
case "$flag" in
v)
VERBOSE_FLAGS='--verbose --progress'
;;
C)
COMMENT="$OPTARG"
;;
h)
usage
help
exit
;;
*)
usage >&2
exit 2
;;
esac
done
shift $((OPTIND - 1))
assert_arg() {
if [ -z "$1" ]; then
printf 'Missing %s\n' "$2" >&2
usage >&2
exit 2
fi
}
ARCHIVE_TAG="${1:-}"
assert_arg "$ARCHIVE_TAG" 'ARCHIVE_TAG'
finish() {
STATUS=$?
printf '\n>>>\n>>> exit status: %s\n>>>\n\n' "$STATUS" >&2
}
trap finish EXIT
run() {
borg create \
$VERBOSE_FLAGS \
--comment "$COMMENT" \
--exclude ~/.cache/ \
--exclude ~/Downloads/ \
--stats \
--compression lzma,9 \
"::{hostname}-{now}-$ARCHIVE_TAG" \
~/
STATUS=$?
if [ "$STATUS" = 0 ] || [ "$STATUS" = 1 ]; then
echo 'WARNING, but no ERROR.' >&2
return 0
else
return "$STATUS"
fi
}
run || exit $?
|
