1 files changed, 2 insertions, 0 deletions
diff --git a/scripts/rot b/scripts/rot
index 8deafb6..001cace 100755
--- a/scripts/rot
+++ b/scripts/rot
@@ -17,6 +17,8 @@ while [[ $# -gt 0 ]]; do
 	esac
 done
 
+[ -z "$ROT" ] && { ROT="13"; }
+
 echo "$DATA" | awk -vrot=$ROT -valph=$(echo -n {A..Z} , {a..z} | tr -d ' ') '
 BEGIN {
 	split(alph, alph_arr, ",");