Add lockfile logic

scripts/rclone-sync.sh

@@ -10,6 +10,13 @@ DEST="goji-hetzner:"
 # Create timestamped log file
 TIMESTAMP=$(date +"%Y-%m-%d_%H-%M-%S")
 LOGFILE="$HOME/logs/rclone-sync-$TIMESTAMP.log"
+LOCKFILE="/tmp/rclone-sync.lock"
+
+exec 9>"$LOCKFILE"
+if ! flock -n 9; then
+  echo "rclone sync is already running. exiting...." | tee "$LOGFILE" >&2
+  exit 1
+fi
 
 # Run rclone and log output to both screen and file using tee (no --log-file!)
 {