gistfile1.rb

#!/usr/bin/ruby

require 'rubygems'
require 'git'

log     = "~/gitlog.txt"
tmp     = "/tmp/gitlog"
commit  = Git.open('.').log.first
message = [
  commit.date.strftime('%D'),
  `pwd`.split(/\//).last.strip,
  commit.message
] * "\t"

`touch #{log} && echo "#{message}" | cat - #{log} > #{tmp} && mv #{tmp} #{log}`