diff --git a/README.md b/README.md
index 78a439b..91da8ba 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,3 @@
-csc : cluster ssh command
+# csc : cluster ssh command
 
-simple script to execute command over ssh on remote hosts with specific DEBIAN_FRONTEND
+simple script to execute command over ssh on remote hosts with "dialog" DEBIAN_FRONTEND
diff --git a/csc b/csc
index d5866bc..f90eae9 100755
--- a/csc
+++ b/csc
@@ -1,15 +1,23 @@
-#!/bin/env sh
+#!/usr/bin/env sh
 
 # csc : cluster ssh command
 # ./csc <command>
-# launch command over ssh on cluster hosts with specific DEBIAN FRONTEND
+# launch command over ssh on cluster hosts with "dialog" DEBIAN_FRONTEND
 
-# TODO
-HOSTS_FILE="/home/flo/hosts.int"
+VERBOSE=false
 
-CMD=$@
+# TODO clush like
+HOSTS="$HOME/.config/csc/hosts"
 
-if [ -z "$CMD" ]
+if [ ! -e "$HOSTS" ]
+then
+    echo "hosts file do not exists !"
+    exit
+fi
+
+COMMAND=$@
+
+if [ -z "$COMMAND" ]
 then
     echo "command is missing"
     echo "USAGE: $0 <command>"
@@ -17,13 +25,22 @@ then
 fi
 
 # see http://askubuntu.com/questions/506158/unable-to-initialize-frontend-dialog-when-using-ssh
-#FRONTEND="DEBIAN_FRONTEND=noninteractive"
+#FRONTEND="DEBIAN_FRONTEND=noninteractive" # then you should use clush instead :)
 FRONTEND="TERM=$TERM DEBIAN_FRONTEND=dialog"
 #FRONTEND="DEBIAN_FRONTEND=readline"
 
-echo "will do :"
-echo "for i in `cat $HOSTS_FILE`; do ssh -t \$i "$FRONTEND $CMD"; done"
+if [ "$VERBOSE" = true ]
+then
+    echo "will do :"
+    echo "for i in `cat $HOSTS`; do ssh -t \$i "$FRONTEND $COMMAND"; done"
+fi
 
-for i in `cat $HOSTS_FILE`
-    do echo; echo "********** $i / $CMD **********"; ssh -t $i "$FRONTEND $CMD"
+for i in `cat $HOSTS`
+    do
+    echo "\e[34m---------------\e[0m"
+    echo "\e[34m$i\e[0m"
+    echo "\e[34m---------------\e[0m"
+    ssh -t $i "$FRONTEND $COMMAND"
 done
+
+exit