ruby-tty-which - 0.4.2-2 main

This library provides a platform-independent analogue of Unix `which`
command.
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TTY::Which has a `which` method that searches set of directories for an
executable file based on the `PATH` environment variable, which returns
an absolute path if the executable program exists, and `nil` otherwise.
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This is part of the TTY components framework to easily build terminal
applications in Ruby.