It should work if you install the "p7zip-full" package instead of "p7zip".
I have updated the dependency and uploaded a new version to Debian. ** Bug watch added: Debian Bug tracker #715217 http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=715217 ** Also affects: atool (Debian) via http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=715217 Importance: Unknown Status: Unknown ** Changed in: atool (Ubuntu) Status: New => Fix Committed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1653273 Title: atool doesn't automatically use the 7zip binary installed by apt-get install p7zip To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/atool/+bug/1653273/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs