Job controls

So, we have the job ID, process ID, foreground, and processes, but how do we control these jobs? We have a bunch of commands available, let's have a look at how to use them:

• kill: We can pass the job ID to this command, which will send the SIGTERM signal to all the processes belonging to the job itself:

zarrelli:~$ sleep 100 &
[1] 9909
zarrelli:~$ kill %1
zarrelli:~$ 
[1]+ Terminated sleep 100

You can also pass to kill a specific signal to send to the process. For instance, kill -15 will nicely terminate a process with a SIGTERM signal, and if it refuses to die, kill -9will send a SIGKILL, which will instantly terminate a process. Which signals can we send to a process? Eitherkill -lorcat /usr/include/asm-generic/signal.hwill give us a list of all the signals supported.

• killall:If we know what is the name of the process, the easiest way to kill it is through the killall command followed by the name of the process:

zarrelli:~$ sleep 100 & 
[1] 10595
zarrelli:~$ killall sleep...