start new:
tmux
start new with session name:
tmux new -s myname
| brew update | |
| brew versions FORMULA | |
| cd `brew --prefix` | |
| git checkout HASH Library/Formula/FORMULA.rb # use output of "brew versions" | |
| brew install FORMULA | |
| brew switch FORMULA VERSION | |
| git checkout -- Library/Formula/FORMULA.rb # reset formula | |
| ## Example: Using Subversion 1.6.17 | |
| # |