The default version of Perl on Katana is 5.26.3, which is provided by Rocky Linux 8.9 and can be found at /usr/bin/perl.

Perl 5.36.0 is also installed as an environment module.

It is common for Perl scripts to begin with:

#!/usr/bin/perl

However, that will restrict you to the default version of Perl supplied with the Linux distribution. For greater flexibility, try using the following:

#!/usr/bin/env perl

Then if you choose to use a different version of Perl (by loading an environment module) it will not be necessary to modify your scripts.