inst : check script existance before executing installation

inst

@@ -38,6 +38,11 @@ then
 fi
 
 # Check file existance
+if [ ! -e $script ]
+then
+	inst_fatal "$script does not exist"
+	exit 1
+fi
 
 # Prompt before installation
 inst_out 'Ready for installation'
@@ -95,6 +100,9 @@ then
 	fi
 fi
 
+# Check if all right
+
+
 # End
 inst_out 'Script finished'
 exit $?