What does it mean WCHAN 'finish' in ps -l <proc_id> output?

Question

I'm running a number of ssh commands in a background. When the triggered-via-ssh command finishes to run, the appropriate background ssh process doesn't get terminated and its ps -l output shows 'finish' for WCHAN and T for 'state'. So why the triggering process is not terminated and what does it mean 'finish' value for WCHAN?

Thanks a lot

Answer 1

The state "T" means that the process was suspended. Since you said you ran it in the background, this may be due to reading tty input (or writing tty output if stty tostop is set). If the program does not require any input, use the ssh -n option to avoid this.