TTY::Which

Platform independent implementation of Unix which utility that searches for executable file in the path variable.

TTY::Which provides cross-platform executables search component for TTY toolkit.

Installation

Add this line to your application's Gemfile:

gem 'tty-which'

And then execute:

$ bundle

Or install it yourself as:

$ gem install tty-which

TTY::Which has which method that searches the path for executable file.

When the path to executable exists, an absolute path is returned, otherwise nil.

For example, to find location for a single executable do:

TTY::Which.which('less')  # => '/usr/bin/less'
TTY::Which.which('git')   # => 'C:\Program Files\Git\bin\git'

You can also check an absolute path to executable:

TTY::Which.which('/usr/bin/ruby')  # => '/usr/bin/ruby'

The exist? returns true if the executable exists in the path and false otherwise:

TTY::Which.exist?('ruby') # => true