jpetazzo/nsenter — pull request #4 by jbbarth (2014-07-02 08:16:45+00:00)
Title: Fix a 'unknown operand' warning in docker-enter

The commit says it all...

This is the kind of warning you get when adding additional operands:

$ docker-enter $(docker ps -q -n -1) /bin/bash
sh: /bin/bash: unknown operand
root@60428207baf8:/#

PS: thanks for it and your blog article!