This adds symlinks for GNU utilities with g prefix to /usr/local/bin/:
brew install coreutils findutils gnu-tar gnu-sed gawk gnutls gnu-indent gnu-getopt grep
See brew search gnu for other packages. If you want to use the commands without a g prefix, install the formulas with --default-names (or --with-default-names if your brew version is newer), or add for example /usr/local/opt/coreutils/libexec/gnubin before other directories on your PATH.
$ brew info coreutils
coreutils: stable 8.21
http://www.gnu.org/software/coreutils
Depends on: xz
/usr/local/Cellar/coreutils/8.20 (208 files, 9.4M)
/usr/local/Cellar/coreutils/8.21 (210 files, 9.6M) *
https://github.com/mxcl/homebrew/commits/master/Library/Formula/coreutils.rb
==> Caveats
All commands have been installed with the prefix 'g'.
If you really need to use these commands with their normal names, you
can add a "gnubin" directory to your PATH from your bashrc like:
PATH="/usr/local/opt/coreutils/libexec/gnubin:$PATH"
Additionally, you can access their man pages with normal names if you add
the "gnuman" directory to your MANPATH from your bashrc as well:
MANPATH="/usr/local/opt/coreutils/libexec/gnuman:$MANPATH"
