Method: Unix::Exec#which

Defined in:
lib/beaker/host/unix/exec.rb

#which(command) ⇒ String

First path it finds for the command executable

Examples:

host.which('ruby')

Parameters:

  • command (String) —

    The command executable to search for

Returns:

  • (String) —

    Path to the searched executable or empty string if not found



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# File 'lib/beaker/host/unix/exec.rb', line 439

def which(command)
  unless @which_command
    if execute('type -P true', :accept_all_exit_codes => true).empty?
      raise ArgumentError, "Could not find suitable 'which' command" if execute('which true', :accept_all_exit_codes => true).empty?

      @which_command = 'which'

    else
      @which_command = 'type -P'
    end
  end

  result = execute("#{@which_command} #{command}", :accept_all_exit_codes => true)
  return '' if result.empty?

  result
end