##Key Permissions
*OWNER:READ GROUP:READ USER:READ
chmod 0444
*OWNER:READ WRITE GROUP:READ USER:NONE
chmod 0640
*OWNER:READ-WRITE-EXECUTE GROUP:READ-WRITE-EXECUTE USER:READ-EXECUTE
chmod 0775
*SETGID append 2 to front, this makes the referenced path adopt the security for new items. Only works if group has execute
chmod 2775 PATH