Make sure to check out the manual for each command by running man ps, man top, or man htop respectively. I hope that you now understand what Linux processes are and how to manage them using the ps, top, and htop commands. Or display only a specific process that matches a particular name like so: ps aux | grep Chrome You can pipe it through less to display the command output one page at a time in your terminal like so: ps aux | less When you list running processes, it is usually a long and clustered list. This will automatically terminate and close the iTerm2 process (application). To kill the iTerm2 process in the screenshot above, we will use any of the commands below. To find the process ID of a running process, you can use the pgrep command followed by the name of the process like so: pgrep iTerm2 You can kill a process by running the kill command with the process ID or the pkill command with the process name like so: kill Killing a process means that you terminate a running application or command. Just type htop in your terminal and you'll get a result like the one you see in the screenshot below: How to Kill Running Processes in Linux Htop is not installed on Linux by default, so you need to install it using the command below or download the binaries for your preferred Linux distro. It also displays a real-time sorted list of processes based on their CPU usage, and you can easily search, filter, and kill running processes. Type top in your terminal and you'll get a result like the one you see in the screenshot below: You can type q to exit the session.Īn alternative to top is htop which provides an interactive system-monitor to view and manage processes. You can also use the top task manager command in Linux to see a real-time sorted list of top processes that use the most memory or CPU. How to List Running Processes in Linux using the top and htop Commands CMD returns the command that launched the process.STAT returns the symbolic process state.%MEM returns the percentage memory usage.%CPU returns the percentage of CPU usage.USER returns the username of the user running the process.This will display the process for the current shell with eleven columns: x: includes processes that do not have a controlling terminal.u: displays the processes belonging to the specified usernames.a: displays information about other users' processes as well as your own.To display all running processes for all users on your machine, including their usernames, and to show processes not attached to your terminal, you can use the command below: ps aux Type man ps in your terminal to read the manual for the ps command, which has a complete reference for all options and their uses. If you specify more than one of these options, then all processes which are matched by at least one of the given options will be displayed. You can choose to display a certain set of processes by using any combination of options (like -A -a, -C, -c, -d, -E, -e, -u, -X, -x, and others). CMD returns the name of the command that launched the process.TIME returns the total amount of CPU usage.TTY returns the terminal type you're logged into.This will display the process for the current shell with four columns: To test this, just open your terminal and run the ps command like so: The ps command displays your currently running processes in real-time. You can list running processes using the ps command (ps means process status). How to List Running Processes in Linux using the ps Command Likewise, when you run a command in the terminal (like curl ), it creates a process that will only stop when the command finishes executing or is terminated. Basic knowledge of navigating around the command-line.Ī process is an instance of a running computer program that you can find in a software application or command.įor example, if you open your Visual Studio Code editor, that creates a process which will only stop (or die) once you terminate or close the Visual Studio Code application.Have you ever wondered how you can check all the programs running on your machine? Then this article is for you, as I'll show you how to list, manage, and kill all the running processes on your Linux machine. So multiple programs can run at the same time. One beautiful feature of the Linux operating system and of modern computers in general is that they provide support for multitasking. These applications can include a browser, code editor, terminal, video conferencing app, or music player.įor each of these software applications that you open or commands you run, it creates a process or task. Every day, developers use various applications and run commands in the terminal.
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