module Byebug::Helpers::BinHelper

Utilities for interaction with executables

Public Instance Methods

which(cmd) click to toggle source

Cross-platform way of finding an executable in the $PATH. Borrowed from: stackoverflow.com/questions/2108727

# File lib/byebug/helpers/bin.rb, line 11
def which(cmd)
  return File.expand_path(cmd) if File.exist?(cmd)

  exts = ENV['PATHEXT'] ? ENV['PATHEXT'].split(';') : ['']
  ENV['PATH'].split(File::PATH_SEPARATOR).each do |path|
    exts.each do |ext|
      exe = File.join(path, "#{cmd}#{ext}")
      return exe if File.executable?(exe) && !File.directory?(exe)
    end
  end

  nil
end