rebuild of backup command

backup.sh

@@ -1,7 +1,13 @@
 #!/bin/bash
 source env.sh
 echo "Backup $NAME at $DATE"
-BACKUP_CMD=restic backup $BACKUP_DIR $BACKUP_PARAMS -e $BACKUP_EXCLUSIONS
+BACKUP_CMD=restic backup $BACKUP_DIR
+if [[ $BACKUP_PARAMS ]]; then
+    BACKUP_CMD=$BACKUP_CMD $BACKUP_PARAMS
+fi
+if [[ $BACKUP_EXCLUDE_FILE ]]; then
+    BACKUP_CMD=$BACKUP_CMD --exclude-file $BACKUP_EXCLUDE_FILE
+fi
 running=$(pgrep -f "$BACKUP_CMD")
 if [[ $running ]]; then
     echo "Backup alreadying running : $running. Exiting..."