Linux

How to remove/kill a process in Linux (kill)

September 29, 2021

How to remove/kill a process in Linux (kill)

In this article, we will see how to kill processes that are running on Linux and through the terminal of course, for when the need arises to stop something that is affecting our machine or we want to stop the process.

kill a process in Linux cover

Finding processes on Linux

Well, first, before killing the process that is running on the machine, you need to know its name

So to find the process, we have several commands

The first one is the top, with this command we can see all processes in real-time on our machine

Also, lots of other information about it, see what happens when we type the top command in the terminal:

Imagem

obs: to exit this view press ctrl + c

Another possible way to look for a process would be through the command ps aux with the help of grep to filter results.

This method is a search on the processes that are currently active on our Linux

Let’s, for example, search Sublime, a very famous text editor in the web field.

The command entered was:

ps aux | grep 'sublime'

The output is:

Imagem

So see that we have three results, the first two are processes that are used to run the Sublime editor, and finally, we have the grep command itself that we use to find the process.

Well, at this point we already have two ways to find the process, we need to know now how to kill it.

How to kill the process on Linux

Now that we have important information like name and process ID.

We can choose two commands:

  • kill: kill a process by ID;
  • killall: kills a process by name;

If we type then:

kill 10133

We will kill the Sublime process, note that the ID may change according to how the process is created.

Probably on your machine, the process has another ID, I’m using the one that appeared when I typed ps aux.

And similarly, if we type this command:

killall sublime_text

We will be killing the Sublime process, and the editor closes

Conclusion

In this article were presented ways to kill processes that are running on Linux

We also saw how to check which processes are running, as we were able to check the names of which ones we have to eliminate

Making our task easier and also more accurate

And that’s it for today, until the next post!

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