How To Process System Exit Codes Using Perl Eval

Author: , March 9th, 2021

The trick to using eval to catch shell execution is to return twice, once inside the eval and once outside:


How To Properly Specify Command and Arguments to Exec in Perl

Author: , December 11th, 2019

When using Perl’s exec() call, the best way to invoke it is as follows:

This syntax does some important things: – passes a scalar value as the first argument which exec interprets as PROGRAM – passes an array as the second argument which exec will use as the arguments to pass into PROGRAM Note […]

How To Install/Update CPAN on MacOS Mojave with fatal error: ‘EXTERN.h’ file not found

Author: , June 12th, 2019

The Problem Tried to install the latest version of cpan and got stuck. Tracked it down to the dependency module Mac::SystemDirectory which was failing to build:

The Solution Use the MacOS installer command to deploy the needed files:

The, rerunning the cpan install works: