Why do you care if it's a login or non-login shell? Perhaps you really want to know if the script is being run interactively?

Detecting interactive/non-interactive shell

In reply to Re: How do I test if my Perl script was run using a login vs a non-login shell by Mr. Muskrat
in thread How do I test if my Perl script was run using a login vs a non-login shell by paulski82

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