Perl comes with a very powerful built-in command line debugger. In this screencast you can see basics how to use it. Support via: https://www.patreon.com/szabgab For blog entries and for more screencasts see http://perlmaven.com/ About Perl Programming and Perl programmers. For the blog entry of this screencast visit http://perlmaven.com/using-the-built-in-debugger-of-perl Debugger commands used: q - quit, h - help, p - print, s - step in, n - step over, r - step out, T - stack trace l - listing code The Padre project can be found here: http://padre.perlide.org/ The book mentioned was Pro Perl Debugging: http://www.apress.com/9781590594544 If you are interested an on-site Perl training contact me https://szabgab.com/contact.html