Perl has decades worth of high quality libraries to do heavy lifting. https://metacpan.org You can get away with easy scripting for creating significant programs.

UNIX commandline and Perl is a match made in heaven.

Using Golang will demand significantly more effort when doing more complex stuff but will give you concurrency, easier deploys/multi-platform support and better performance if doing CPU intensive stuff.

I use Go for what I previously maybe used C for.

Thanks to the quick compile time and good tooling Go almost feels like a scripting language when developing but especially for UNIXy stuff it can't replace Perl for me.

For learning I would highly recommend the following books:

  Beginning Perl by Ovid.
  Modern Perl by chromatic.

There are a lot of other good Perl books but some of them are getting old and it is better to already know a bit before reading so one can separate good from dated etc.

Nice. Thanks.