Any way of knowing if ttyd is running a process?

[abhijit-hota]

I'd like to check if ttyd is currently "busy" or "free" to take any commands.

[tsl0922]

I think you are talking about process insides a shell?

No. ttyd is a tty io forwarder, you can't konw if a process is exited with the input/output data.

the only way to know if a process is exited is to wait it, this is done by the shell.

[abhijit-hota]

Thanks for the response!

I think you are talking about process insides a shell?

Yep.

the only way to know if a process is exited is to wait it

Got it. Thanks for the pointer.

If I'm running ttyd via a browser automation tool and want to get the pid of a process that I executed inside ttyd, how do you suggest I go about it?

[tsl0922]

you can use $! to get the last command's pid in a shell sessoin, otherwise no direct way.