replace tree with ls

scripts/extra/install_custom_ctypes.sh

@@ -79,7 +79,7 @@ echo "Created temporary directory '${tmpdir}'"
 
 # some logging
 echo ">>> Checking contents under '${NESSI_SITE_INSTALL}'"
-tree -d ${NESSI_SITE_INSTALL}
+ls -lR ${NESSI_SITE_INSTALL}
 
 # check if custom_ctypes has already been installed
 if [[ -d ${NESSI_SITE_INSTALL}/lib ]]; then