backup.sh: disable --progress for cronjobs; add comment

Signed-off-by: Florian Pritz <bluewind@xinu.at>

1 files changed, 14 insertions, 10 deletions

diff --git a/backup.sh b/backup.sh
index 4208db1..e6d4ad0 100755
--- a/backup.sh
+++ b/backup.sh
@@ -21,7 +21,8 @@ main() {
 	TMPDIR="$(mktemp -d "/tmp/${0##*/}.XXXXXX")"
 	trap "rm -rf '${TMPDIR}'" EXIT TERM
 
-	# these mountpoints will be excluded
+	# these mountpoints will be excluded. mountpoints not listed in either this
+	# or the includeMountpoints variable below will throw an error
 	excludeMountpoints=(
 	/tmp
 	/sys
@@ -74,16 +75,19 @@ EOF
 backup_borg() {
 	local src=$1
 	local dst=$2
+	local -a options=(
+		--verbose
+		--numeric-owner
+		--compression lz4
+		--stats
+		--exclude-from "$TMPDIR/exclude-list-borg"
+		)
+
+	if tty -s; then
+		options+=(--progress)
+	fi
 
-	borg create \
-		-v \
-		--numeric-owner \
-		--compression lz4 \
-		--stats \
-		--progress \
-		--exclude-from "$TMPDIR/exclude-list-borg" \
-		"$dst::backup-$(date "+%Y%m%d-%H%M%S")" "$src"
-
+	borg create "${options[@]}" "$dst::backup-$(date "+%Y%m%d-%H%M%S")" "$src"
 	borg prune -v --keep-within 6m "$dst"
 }