The oneliner action is designed for quick execution of short, trivial scripts, such as a for loop for repeating an action. It supports any scripting language currently availabel through fungw. Each oneliner is an independent script context - variables, functions and other global states do not persist.

This group of actions offers three forms:

- oneliner(lang, script) - execute the script in the language specified
- lang(script) - shorthand for the above
- lang - switch the command line interpreter to execute one-liners in the given language, until /exit

For example, a simple calculation using awk can be done in three ways:

- oneliner(awk, 'print 42*3')
- awk('print 42*3')
- awk, then print 42*3, then /exit