diff --git a/Lib/.gitignore b/Lib/.gitignore
index 3e34327..175a57e 100644
--- a/Lib/.gitignore
+++ b/Lib/.gitignore
@@ -1,3 +1,4 @@
 
 *.png
+cflow.txt
 
diff --git a/Lib/utility.sh b/Lib/utility.sh
new file mode 100755
index 0000000..d2c59ca
--- /dev/null
+++ b/Lib/utility.sh
@@ -0,0 +1,12 @@
+#!/bin/bash
+
+set -e
+
+SRC="testtga.c essais.c operat.c image.c effects.c tele_2.c calculs.c"
+SRC="$SRC dither.c television.c"
+
+FLOW="cflow.txt"
+
+cflow --depth=5 -o $FLOW -m main --number $SRC
+
+less $FLOW