robbyrussell/oh-my-zsh — pull request #2603 by docwhat (2014-03-13 18:47:16+00:00)
Title: ssh-agent: prevent environment file from flapping

On an OS X laptop, the variable `$HOST` changes a lot depending on what wifi
network you're connected to. This causes a lot of `~/.ssh/environment-$HOST`
files to be created and causes multiple ssh-agents to created.

Instead, use `scutil --get ComputerName` to get something more stable.