Given zero command line arguments, raven will start in interactive mode.
>>> raven Raven (dev), Copyright (C) 2005-2006 Sean Pringle, mythago.net Raven comes with ABSOLUTELY NO WARRANTY; for details type LICENSE > _
The engine may be run as a shell script:
#!/usr/local/bin/raven 'hello world' print
... from a command line with source file as first argument:
>>> raven myscript
... executing standard input as source code (note the use of - in place of source file to designate STDIN)
>>> cat myscript | raven -
... reading standard input as data and executing a supplied line of code (note -e switch):
>>> echo 'a,b,c' | raven -e "',' split ':' join print" a:b:c
eof