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You can also display security information in user-defined format with this command. Show security context specifically for SELinux like this. Then use the kill command to terminate it immediately. Find top running processes by highest memory and CPU usage in Linux. Find all PIDs of all instances of a process, useful when writing scripts that need to read PIDs from a std output or file. To select a specific process by its name, use the -C flag, this will also display all its child processes. Below is another example of a custom output format showing file system group, nice value, start time and elapsed time of a process.
Using the -o or -format options, ps allows you to build user-defined output formats as shown below. To print all threads of a process, use the -H flag, this will show the LWP light weight process as well as NLWP number of light weight process columns. To select processes by ttyuse the -t flag as follows.Ī process tree shows how processes on the system are linked to each other processes whose parents have been killed are adopted by the init or systemd. You can select all processes owned by you runner of the ps commandroot in this casetype. To perform a full-format listing, add the -f or -F flag. If you run ps command without any arguments, it displays processes for the current shell.
Note that ps produces output with a heading line, which represents the meaning of each column of information, you can find the meaning of all the labels in the ps man page. It is one of the important utilities for system administration specifically under process monitoring, to help you understand whats is going on a Linux system.