Make bin/e work with more shells.
Make bin/e work with more shells.

Revision is similar to pull request #49 in that it more strictly follows
the POSIX standard for shell scripts by not using "test". Small change,
but it means bin/e will work with more shells on more systems (e.g.
Ubuntu 8+ which links /bin/sh to /bin/dash by default).

megalithic/bits-and-bobs,megalithic/bits-and-bobs,megalithic/bits-and-bobs,megalithic/bits-and-bobs,megalithic/bits-and-bobs