CODEWITHSUNDEEP
rubyprocessnonblockingprocess-control
Karoly Horvath
Karoly Horvath

Reputation: 96266

ruby creating processes and reading output

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?

Upvotes: 2

Views: 292

Answers (1)

cam
cam

Reputation: 14222

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.

Upvotes: 1

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