rust-lang/rust-by-example — pull request #360 by vbuslov (2014-12-28 18:51:09+00:00)
Title: Fix shell scripts for MacOS X

Make test and book doesn't work on Yosemite without installing GNU versions of grep, sed and findutils.
Modify shell scripts to be compatible with BSD-based distributions:
* grep extended regex syntax since Perl syntax no longer supported
* find requires explicit path
* sed requires explicit option after empty extension