https://bugzilla.redhat.com/show_bug.cgi?id=988193
--- Comment #12 from Raphael Groner raphgro@web.de --- (In reply to Raphael Groner from comment #11) see also http://stackoverflow.com/questions/10319652/check-if-a-file-is-executable http://www.tldp.org/LDP/Bash-Beginners-Guide/html/sect_07_01.html
Honestly, I would say that touch and gtk-update-icon-cache should be expected to be there on a good working Xfce system.
PS: What if bash is not installed? SCNR.