The ultimate guide to Windows and Unix file line ending conversion in Perl
Think you know how to fix CRLF in one line of Perl? There might be more to it than you think ...
Wear the cloak of invisibility with OpenVPN and Perl
How to covertly screen-scrape behind an encrypted connection and masked identity
How to schedule Perl scripts using cron
Cron is a job scheduling program available on UNIX-like platforms. Most system commands can be scheduled including the execution of Perl programs. Once a job is setup, cron will run it as scheduled even if the user is not logged in, which can be a great way to automate sysadmin tasks or repetitive jobs. This article describes how to run Perl scripts with cron.
Installing Perl modules with C library dependencies
How to tackle this tricky config issue
Test if the user is root
When Perl is executing a program, it maintains the user id of the process owner in a global variable ($<). When a Perl program is executed by root or a user with root privileges (e.g. using the sudo command), the user id variable is always set to zero. This can be checked at the command line: