Scroll to navigation

App::Cmd::Plugin::Prompt(3pm) User Contributed Perl Documentation App::Cmd::Plugin::Prompt(3pm)


App::Cmd::Plugin::Prompt - plug prompting routines into your commands


version 1.006


In your app:

  package MyApp;
  use App::Cmd::Setup -app => {
    plugins => [ qw(Prompt) ],

In your command:

  package MyApp::Command::dostuff;
  use MyApp -command;
  sub run {
    my ($self, $opt, $args) = @_;
    return unless prompt_yn('really do stuff?', { default => 1 });


This library should run on perls released even a long time ago. It should work on any version of perl released in the last five years.

Although it may work on older versions of perl, no guarantee is made that the minimum required version will not be increased. The version may be increased for any reason, and there is no promise that patches will be accepted to lower the minimum required perl.



  my $input = prompt_str($prompt, \%opt)

This prompts a user for string input. It can be directed to persist until input is 'acceptable'.

Valid options are:

  • input: optional coderef, which, when invoked, returns the user's response; default is to read from STDIN.
  • output: optional coderef, which, when invoked (with two arguments: the prompt and the choices/default), should prompt the user; default is to write to STDOUT.
  • valid: an optional coderef which any input is passed into and which must return true in order for the program to continue
  • default: may be any string; must pass the 'valid' coderef (if given)
  • choices: what to display after the prompt; default is either the 'default' parameter or nothing
  • no_valid_default: do not test the 'default' parameter against the 'valid' coderef
  • invalid_default_error: error message to throw when the 'default' parameter is not valid (does not pass the 'valid' coderef)


  my $bool = prompt_yn($prompt, \%opt);

This prompts the user for a yes or no response and won't give up until it gets one. It returns true for yes and false for no.

Valid options are:

 default: may be yes or no, indicating how to interpret an empty response;
          if empty, require an explicit answer; defaults to empty


  my $input = prompt_any_key($prompt);

This routine prompts the user to "press any key to continue." $prompt, if supplied, is the text to prompt with.




Ricardo Signes <>


Ricardo Signes <>


This software is copyright (c) 2004 by Ricardo Signes.

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.

2023-01-24 perl v5.36.0