If you’re a Linux user, chances are you’re familiar with the ps command. The ps command is used to display information about processes that are running on the system. In this article, we’ll show you how to use the ps command to view process information and how to use some of its most common options.
How to PS command in linux
The PS command in Linux is a tool that is used to display information about the currently running processes. This information can be useful for troubleshooting and for performance monitoring. The PS command can be used to see the PID (process ID), the TTY (terminal), the TIME (time spent running the process), and the CMD (command) of the running processes. The PS command can also be used to kill processes.
To use the PS command, you will need to open a terminal window. To do this, press CTRL+ALT+T on your keyboard. Once the terminal window is open, you can type in the PS command.
Here are some examples of how to use the PS command:
To see all the running processes:
ps
To see all the running processes and their PIDs:
ps -A
To see all the running processes and their TTYs:
ps -t
To see all the running processes and their TIMEs:
ps -e -o time
To kill a process with a PID of 1234:
kill -9 1234
PS command in linux
PS command is one of the most basic commands in Linux that allows users to view all the running processes in the system. It provides detailed information about each process including its PID, CPU usage, memory usage, and command line arguments. PS command can also be used to kill processes.
How to use PS command in linux
PS command is a very useful command in linux which gives the information about the currently running processes in the system. This command is very helpful in debugging process related issues.
To use PS command, simply type “ps” on the command line. This will give you the list of all the running processes along with some basic information like PID, TTY, TIME etc. You can also use various options with PS command to get more detailed information.
Some of the useful options that can be used with PS command are -e (to show all processes), -f (to show full format listing), -l (to show long format listing), -A (to show all processes).
You can also use various filters with PS command to get a specific list of processes. For example, you can use “ps -ef | grep firefox” to get the list of all processes related to firefox.
PS command options in linux
The PS command in Linux is used to generate a report of the currently running processes. The report can be generated in a number of formats, depending on the options specified. The most common options are:
-A : Report all processes
-a : Report all processes except session leaders
-C : Report process with the same name as the command used to invoke PS
-d : Report all processes except those running in a terminal
-e : Report all processes
-f : Report process tree
-g : Report process group
-G : Report real group ID
-h : Do not report process hierarchy
-H : Report process hierarchy
-l : Report long format
-L : Report light weight processes
-m : Report process memory usage
-n : Report Nth process
-o : Report custom format
-p : Report specific PIDs
-r : Report only running processes
-s : Report process status
-S : Report cumulative process status
-t : Report processes attached to specified terminals
-T : Report threads
-u : Report process owner
-U : Report real user ID
-v : Report process virtual memory usage
-x : Report processes without controlling terminals
PS command usage in linux
The ps command is a Linux utility that displays information about processes running on your system. The ps command can be used to view a process’s PID, the process’s parent process, the amount of time the process has been running, the process’s memory usage, and more.
To view information about all processes on your system, you can use the ps command with the -A flag. For example, the following command will display information about all processes on your system:
ps -A
To view information about a specific process, you can use the ps command with the -p flag. For example, the following command will display information about the process with PID 1234:
ps -p 1234
To view information about all processes running as a specific user, you can use the ps command with the -u flag. For example, the following command will display information about all processes running as the user root:
ps -u root
To view information about all processes running as a specific group, you can use the ps command with the -g flag. For example, the following command will display information about all processes running as the group wheel:
ps -g wheel
To view information about all processes in a specific session, you can use the ps command with the -s flag. For example, the following command will display information about all processes in session 1:
ps -s 1
When to use PS command in linux
PS command is a versatile tool that can be used in a number of different scenarios. One common use case is to find out which processes are currently running on a system. This can be useful when trying to troubleshoot an issue or simply get a better understanding of what is going on behind the scenes. PS can also be used to kill processes that are no longer responding.
In general, the PS command should be used whenever you need to list or manage processes on a Linux system. It is a powerful tool that can be used in a variety of different ways to achieve different objectives. With a little bit of practice, you should be able to master the basics of using PS and incorporating it into your workflow.
Why use PS command in linux
The PS command in Linux is used to display information about processes that are running on the system. This information can be useful for troubleshooting and debugging purposes. The PS command can be used to see the process id (PID), the parent process id (PPID), the user id (UID), the group id (GID), the command name, the start time, the elapsed time, the CPU time, the memory usage, and the status of a process.