In Unix and Unix-like operating systems , job control refers to control of jobs by a shell , especially interactively, where a "job" is a shell's representation for a process group. Job control is of particular interest in Unix due to its multiprocessing , and should be distinguished from job control generally, which is frequently applied to sequential execution batch processing. When using Unix or Unix-like operating systems via a terminal or terminal emulator , a user will initially only have a single process running, their login shell. Most tasks [a] directory listing, editing files, etc. However, sometimes the user will wish to carry out a task while using the terminal for another purpose.
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Ask Ubuntu is a question and answer site for Ubuntu users and developers. It only takes a minute to sign up. Connect and share knowledge within a single location that is structured and easy to search. I typed suspend in my terminal, and it suspended the execution. How do I get back to normal terminal functioning? Of course I can close the terminal and open a new one, but is there no way to "resume" the terminal functionality? According to this list it should be control-z but you need to use control-z to stop the process:.
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Stuff that runs in background of your current shell can be displayed with the jobs command. By default you will not have any jobs running in background. This jobs command will be used several times in this section. Some processes can be suspended with the Ctrl-Z key combination.
A process is simply the instance of a running program. Processes are a fundamental concept of Linux systems and we'll start by discussing what can be termed as the life cycle of processes. This includes the concepts of parent and child processes and while going through this subject, we'll also introduce some essential commands that allow us to view ongoing processes in our terminal. These commands are ps , jobs and top.