ruby creating processes and reading output

Question

I want to create multiple processes (each with cmd + arguments).

I need the pid of the created process so I can kill it if needed.

I also want to be able to read its output (line-by-line) in a non-blocking way (otherwise I have to create threads which I would like to avoid). Feeding its standard input is a bonus.

What's the best way to do this in ruby?

cam · Accepted Answer · 2011-09-17 04:22:29Z

1

Use IO.popen to fork the process (it will return a IO object with a pid method corresponding to the forked process). You can select on the IO object to avoid blocking.

answered Sep 17, 2011 at 4:22

cam

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