imaginemos que pretendemos saber qual o processo que está a ouvir na porta 5353 no nosso sistema:
sudo ss -tulpn | grep :5353
já se pretendemos saber qual o processo que está a utilizar a porta 58042:
sudo ss -tupn | grep :58042
https://www.cyberciti.biz/faq/what-process-has-open-linux-port/
listar os dispositivos de vídeo:
sudo apt install v4l-utils
v4l2-ctl --list-devices
e o resultado:
Integrated Camera: Integrated C (usb-0000:00:1a.0-1.6):
/dev/video0
/dev/video1
e agora listar os processos que estão a utilizar o dispositivo:
lsof /dev/video0
e o resultado:
A zombie process doesn't react to signals because it's not really a process at all. A zombie is already dead. Therefore it cannot be killed. ;-)
If you want too kill the parent process of zombie process then do the following:
ps xal | grep '[z]ombie' The third field on each line is the parent pid. then use normal kill command for that.
http://forums.cpanel.net/f5/how-kill-zombie-process-server-62738.html