CODEWITHSUNDEEP
node.jsprocessstdoutstdin
pocesar
pocesar

Reputation: 7050

Write to another already running process stdin from Node.js without starting from inside

I have a program that isn't started from inside Node.js, so I cannot use spawn'd stdin to write to. I have the PID of the process that is listening for stdin input, how can I write to it using my node code?

I always see code examples using child_process module, and my use case is different.

Upvotes: 1

Views: 472

Answers (2)

Robert Brisita
Robert Brisita

Reputation: 5844

If you have the process id then one can use ptrace or one of its variants: strace or ltrace to control, manipulate, and view process information and communication.

Upvotes: 0

mscdex
mscdex

Reputation: 106698

On Linux you should be able to write to '/proc/' + pid + '/fd/0'. However this isn't portable.

Upvotes: 1

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