I'm not sure if this is the right place to report installation issues, but... Trying to install version 13 (i.e., composer_xe_2013.0.079) under Debian 7.0 results in a bunch of empty scripts, as shown in the first attachment.
I know that Debian 7.0 isn't supported (yet), but since it seems that the problem is caused by sh pointing to dash instead of bash, it'll probably happen under Ubuntu as well.
In the new Intel installation scripts, redirection (to dev/null or whatever) sometimes uses bash syntax, instead of proper POSIX syntax, so some errors are shown during the installation (see second attachment), and the installation seems to fail at least partially.
By (temporarily) making /bin/sh point to /bin/bash, the installation is completed successfully.