List of GNU packages for homebrew
find, tar, awk, and sed are not included in coreutils:

brew install coreutils findutils gnu-tar gawk gnu-sed


You can use brew search gnu to search for other formulas where the name contains gnu.

Formulas for other commands that are not installed by default:

brew install ack aspell dos2unix exiftool ffmpeg ghostscript iftop imagemagick lame multimarkdown netcat pandoc parallel pidof poppler pstree recode rename sox ssh-copy-id tmux tree watch wget xmlstarlet

I tried running compgen -c on Ubuntu and OS X VMs and running this:

comm -23 &lt;(sort ubuntu) &lt;(sort osx) | parallel -P10 brew info {} \&gt; /dev/null 2\&gt;\&amp;1 \&amp;\&amp; echo {} | sort -u | tr '\n' ' '

There were surprisingly few formulas, but the formula names don't always match command names:

_lzma apg arping aspell dash dnsmasq dpkg duplicity enchant fribidi gcc gettext ghostscript gpg gs lesspipe logrotate lzma lzmainfo mawk mtools mtr netcat ntfs-3g pdftohtml pidof pkg-config pstree rename ssh-copy-id unlzma usbmuxd watch wget xz