You can use a dummy parameter with a unique identifier, like:

perl -V:1234 -w -e ' $a = <>; print $a; '

(this example would print some garbage to STOUT, which may be undesirable)

It shows in ps as:

perl -V:1234 -w ...

In reply to Re: Suggestions on differentiating child processes by fglock
in thread Suggestions on differentiating child processes by gnu@perl

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