diff --git a/load.sh b/load.sh
index 45e5242..2f9b50d 100755
--- a/load.sh
+++ b/load.sh
@@ -65,6 +65,12 @@ unset BASH_SHELL_LOADED
 
 module_load shell-process-directory
 
+if ! command -v which > /dev/null; then 
+echo missing "which" command install package
+which () { command -v "$1"; }
+fi 
+
+
 # if [[ $SSH_SESSION ]]; then 
 #   # ssh session only process base by default
 #   # env | grep SSH