To stop the current process and get back to the shell:
ctrl+z
To put the current process in the backgroup
bg
To bring the background process to front
fg
To send the the job to background on one line, put ambersand (&) at the end eg usingvi command:
vi somefile.txt &
To see all the background jobjs
jobs
Bringing specific job from background to foreground
fg %1 - this will bring the job number 1 to front
List all the running processes
ps aux
To filter some process, like to get the process id and stuff
ps aux | grep "process name"