ripl-shell_commands

>> require 'ripl/shell_commands'
=> true
>> !date
Sat Dec  1 21:47:55 PST 2012
=> true
>> !cd /etc/
=> true
>> @path = '/etc/profile.d/'
=> "/etc/profile.d/"
>> !ls #{@path}
bash_completion.sh  colorls.csh  less.sh                qt.sh
chgems.sh           colorls.sh   PackageKit.sh          vim.csh
chruby.sh           lang.csh     qt.csh                 vim.sh
colorgrep.csh       lang.sh      qt-graphicssystem.csh  which2.csh
colorgrep.sh        less.csh     qt-graphicssystem.sh   which2.sh
>> true

$ gem install ripl-shell_commands