--- a/admin/data/rename.sh
+++ b/admin/data/rename.sh
@@ -1,6 +1,13 @@
 #!/bin/bash
 
-for file in ./*.xls
+if [[ "$OSTYPE" =~ ^darwin ]]; then
+    alias md5='md5 -r'
+    alias md5sum='md5 -r'
+    # https://sagebionetworks.jira.com/wiki/display/PLFM/Fixing+sed+on+OSx
+    alias sed='gsed'
+fi
+
+for file in ./Aus*.xls
 do
 	echo "${file}"
 	md5=`md5sum "${file}" | cut -d' ' -f 1`