GitとかMercurialとかめも

$ sudo port install git-core
$ git --version
git version 1.6.2.1
$ git clone git://github.com/sstephenson/prototype.git prototype
$ cd prototype
$ git log
commit 37bdd117a0a57c3d39075bd2d972de8dde71520f
Author: Andrew Dupont 
Date:   Wed Apr 8 00:28:40 2009 -0500

    Fix JavaScript error in IE8 when viewing documentation.

$ sudo port install mercurial
$ hg clone http://selenic.com/repo/hg mercurial-repo
$ cd mercurial-repo
$ hg log -l 10
changeset:   8210:344751cd8cb8
tag:         tip
user:        Matt Mackall 
date:        Sun Apr 26 16:50:44 2009 -0500
summary:     replace various uses of list.reverse()