How to resume a suspended (tty input) process [unix/mac]?-CodePudding

I've a background process running in Mac terminal

./scripts/start_emulator &
[1] 37194

After executing several steps, it automatically gets suspended with following message

Accept? (y/N):
[1]    37194 suspended (tty input)  ./scripts/start_emulator

How do I resume / continue this suspended process?

CodePudding user response：

A process running in background [as commanded with & at the end] gets suspended while it is waiting for the input.

Indicator:

suspended (tty input)

In order to resume that suspended process, enter

fg

This brings the background process to the foreground & then enter the input, in my case

The normal process execution should resume in foreground.

CodePudding user response：

To add to the Chaitanya Bapats answer,

you can use jobs command to list the suspended jobs. The output will be something like this if you have more than one suspended jobs.

[1]  - suspended  sleep 400
[2]    suspended  sleep 300

You can bring the job to foreground by using fg. If you have more than one suspended jobs, then you can use fg %ID. ID is the value inside [] in the output of jobs command.

Also, if you want to resume the job without bringing it to the foreground, you can use kill -CONT command. Example usage:

kill -CONT JOBID

You can also use bg command to move job to background. bg will resume the last suspended job. Also, bg %ID will resume the job with [ID] in jobs command output