diff --git a/generate.sh b/generate.sh
index f27302d..fd293db 100755
--- a/generate.sh
+++ b/generate.sh
@@ -3,8 +3,15 @@
 
 usage () {
 
-	[[ $1 -eq 1 ]] && echo "root for use" 
-	exit $1
+	Res=$1
+	case $Res in 
+		1) echo "root for use"  ;;
+		2) echo "Check bin : $BinNeed"  ;; 
+		0) echo "Everything's Gonna Be Alright"  ;;
+		*) echo "Something strange just happend ... "; Res=666  ;;
+	esac 
+
+	exit $Res
 
 }
 
@@ -14,6 +21,17 @@ Liste=./data/liste
 ID=2000
 tID=2
 
+BinNeed="figlet  mke2fs  truncate docker docker-compose "
+
+CheckBinCpt=0
+for CheckBin in ${BinNeed}
+	do
+		[[ -z $(which $CheckBin) ]] && ((CheckBinCpt++))
+	done
+
+[[ ${CheckBinCpt} -ne 0 ]] && usage 2
+
+
 
 cp docker-compose.yml.template.head /tmp/docker-compose.yml
 [ -f /tmp/hostname ] && rm  /tmp/hostname
@@ -80,3 +98,4 @@ for Dir in $( ls -1 ./data/students/part/ | grep _part)
 	done
 
 
+usage 0