'turtle' is a reimplementation of the Unix command line environment in Haskell
so that you can use Haskell as both a shell and a scripting language.
Batteries included: Command an extended suite of predefined utilities
Interoperability: You can still run external shell commands
Portability: Works on Windows, OS X, and Linux
Exception safety: Safely acquire and release resources
Streaming: Transform or fold command output in constant space
Patterns: Use typed regular expressions that can parse structured values
Formatting: Type-safe 'printf'-style text formatting
Modern: Supports 'text' and 'system-filepath'
Read "Turtle.Tutorial" for a detailed tutorial or "Turtle.Prelude" for a
'turtle' is designed to be beginner-friendly, but as a result lacks certain
features, like tracing commands. If you feel comfortable using 'turtle' then
you should also check out the 'Shelly' library which provides similar