Group items tagged

Command line options in Perl could be useful to do smaller tasks effectively. In this article, let us review how to use Perl command line options to do the following tasks: It opens files one by one and replaces the content with STDOUT.

Its been a while since my last post; summer holidays have inflicted upon me some big distractions! So to ease myself back in gently I'll I've pulled out a (nearly finished but unposted) article from last year (in true Blue Peter tradition!)

Perl has a wide range of command-line options or switches that you can use. The options are also called switches because they can turn on or turn off different behaviors. A thorough knowledge of the command line switches will enable you to create short one-time programs to perform odd little tasks.

Regular expressions are very powerful tools for matching, searching, and replacing text. Unfortunately, they are also very obtuse. It does not help that most explanations of regular expressions start from the specification, which is like learning to love Friends reruns by reading a VCR manual. This page provides some simple examples for reference.