Injecting a keypress into a tool started by a bash script

Question

I'm writing a bash script to gather some informations about disks and then start the 'nmon' tool to monitor only those specific disks.

I start the nmon tool out of the bash script (with -g). To get the correct view within the tool one need to press the g key on the keyboard.

Is there any way to get that keypress automatically triggered out of the bash script?

Thanks a lot!

Answer 1

Try this:

echo -n "g" | nmon

For more infomation: https://stackoverflow.com/questions/6264596/simulating-enter-keypress-in-bash-script

Or use expect (man expect comes with examples).