mac目录切换神器atuojump

Replace cd with an intelligent autojump to easily navigate directories from the command line.

autojump is a faster way to navigate your filesystem. It works by maintaining a database of the directories you use the most from the command line.
Directories must be visited first before they can be jumped to.

环境：Python v2.6+ except v3.2
mac系统安装（使用homebrew）：
brew install autojump

将source /usr/local/etc/profile.d/autojump.sh添加到bash配置文件中:.bash_profile