Method: Quality::Which#which

Defined in:
lib/quality/which.rb

#which(cmd) ⇒ Object 



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# File 'lib/quality/which.rb', line 16

def which(cmd)
  exts = @env['PATHEXT'] ? @env['PATHEXT'].split(';') : ['']
  @env['PATH'].split(@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