Method: Chef::Sugar::Shell#which

Defined in:
lib/chef/sugar/shell.rb

#which(cmd) ⇒ String?

Finds a command in $PATH

Parameters:

  • cmd (String) —

    the command to find

Returns:



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# File 'lib/chef/sugar/shell.rb', line 33

def which(cmd)
  if Pathname.new(cmd).absolute?
    File.executable?(cmd) ? cmd : nil
  else
    paths = ENV['PATH'].split(::File::PATH_SEPARATOR) + %w(/bin /usr/bin /sbin /usr/sbin)

    paths.each do |path|
      possible = File.join(path, cmd)
      return possible if File.executable?(possible)
    end

    nil
  end
end