I'm sure there will be some bugs ... http://git.annexia.org/?p=libguestfs.git;a=commitdiff;h=2b5fbc882a0a79646b668c7b95442f0b3673d63a The virt-edit -e option[1] takes a Perl expression. This was handled easily in the old Perl program. In the new code this calls out to 'perl' on the current PATH. As noted in the manual page, if 'perl' is not available then it will fail. Apart from this change, it should be completely compatible with the existing program. Rich. [1] http://libguestfs.org/virt-edit.1.html#non_interactive_editing -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones virt-df lists disk usage of guests without needing to install any software inside the virtual machine. Supports Linux and Windows. http://et.redhat.com/~rjones/virt-df/