Current status: HIGHLY UNSTABLE, DO NOT USE
"Cast", a utility environment.
It provides you with a set of file system operation, which you can extend and access easily from shell.
In addition, "Cast" simplifies the multiline input.
To enable "Cast" from command line add alias cst="<location of your cast>/__init__.py" to yout ~/.bash_rc or ~/.bash_profile and source ~/.bash_rc
To group files in your working directory into folders named after their extension, call cst test