Turtle [1] is a reimplementation of the Unix command line environment in Haskell that permits you to run external shell commands but leverages the typesystem to

Turtle [1] is a reimplementation of the Unix command line environment in Haskell that permits you to run external shell commands but leverages the typesystem to provide structured values and reduce errors. Turtle> cd "/tmp" Turtle> pwd FilePath "/tmp" Turtle> :type pwd pwd :: IO Turtle.FilePath Turtle> touch "file" Turtle> testfile "file" True Turtle> rm "file" Turtle> testfile "file" False Fish [2] and Oilshell [3] are two other efforts to create new shell dialects that improve usability while remaining somewhat backwards-compatible. [1] https://hackage.haskell.org/package/turtle https://hackage.haskell.org/package/turtle https://hackage.haskell.org/package/turtle-1.5.22/docs/Turtle-Tutorial.html https://hackage.haskell.org/package/turtle-1.5.22/docs/Turtl... [2] https://fishshell.com https://fishshell.com [3] https://www.oilshell.org/ https://www.oilshell.org/