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t won't work... Thread would be terminated, I suppose.
Why "suppose"? Did you try it?
So long as you give the thread chance to start the command running, it will complete even if the thread dies.
Ie. "t1.pl runs completely independently of t2.pl".
It's probably not how I would do it; but then 'it' -- as you've defined it so far -- is so completely pointless, I probably wouldn't do it at all.
But if I did, on Windows I'd probably use system 1, 't1.pl arg1 arg2 arg3';
With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.