in reply to How to catch that pid?

My problem: I realized open3 returns the pid only at closure.

If you add an & to the end of your command, it will be run asynchronously and open3 will be able to return the pid to you immediately.

You would need to add a shell into the mix though.


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.
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In the absence of evidence, opinion is indistinguishable from prejudice.

The start of some sanity?