11 Uses for the 'ps' Command in Linux

Show All Processes. ps -ef. ...
Filter by User. ps -e -u userName. ...
Filter by Process Name. ps -C name. ...
Filter by Process ID. ps -ef -p 1234,5678,9012. ...
Grep within Results. ps -ef | grep worker. ...
Display Specific Columns. ps -e -o pid,uname,pcpu,pmem,comm. ...
Sort Processes by Usage. ps -e --sort=-pcpu -o pid,pcpu,comm. ...
Rename Column Headers.

What is use of ps command in Linux?
What is ps and top command in Linux?
What is the output of ps command in Linux?
What are the various options of ps command?
What is PS output?
What is ps aux?
What is a process in Linux?
What are the commands in Linux?
What is difference between PS and PS?
Who am I command in Linux?
What is ps command time?
What is VSZ in ps command?

What is use of ps command in Linux?

Linux provides us a utility called ps for viewing information related with the processes on a system which stands as abbreviation for “Process Status”. ps command is used to list the currently running processes and their PIDs along with some other information depends on different options.

What is ps and top command in Linux?

ps enables you to see all your processes, or just the processes used by certain users, for example root or yourself. top should be used to see which processes are most active, ps could be used to see which processes you (or any other user) are running currently.

What is the output of ps command in Linux?

In it's simplest form, when used without any option, ps will print four columns of information for minimum two processes running in the current shell, the shell itself, and the processes that run in the shell when the command was invoked. The four columns are labeled PID , TTY , TIME , and CMD . PID - The process ID.

What are the various options of ps command?

Options

Option	Description
-d	Displays all processes with the exception of session leaders.
-e	Displays all processes.
-f	Displays a full listing.
-glist	Displays data for the list of group leader IDs.

What is PS output?

ps stands for process status. It reports a snapshot of current processes. It gets the information being displayed from the virtual files in /proc filesystem. The output of ps command is as follows $ ps. PID TTY STAT TIME CMD.

What is ps aux?

In Linux the command: ps -aux. Means show all processes for all users. You might be wondering what the x means? The x is a specifier that means 'any of the users'.

What is a process in Linux?

An instance of a running program is called a process. Every time you run a shell command, a program is run and a process is created for it. ... Linux is a multitasking operating system, which means that multiple programs can be running at the same time (processes are also known as tasks).

What are the commands in Linux?

which command in Linux is a command which is used to locate the executable file associated with the given command by searching it in the path environment variable. It has 3 return status as follows: 0 : If all specified commands are found and executable.

What is difference between PS and PS?

1 Answer. From the manual, By default, ps selects all processes with the same effective user ID (euid=EUID) as the current user and associated with the same terminal as the invoker. For example, if you open a gnome-terminal and give the ps command, it will list all your processes started from that terminal.

Who am I command in Linux?

whoami command is used both in Unix Operating System and as well as in Windows Operating System. It is basically the concatenation of the strings “who”,”am”,”i” as whoami. It displays the username of the current user when this command is invoked. It is similar as running the id command with the options -un.

What is ps command time?

The ps (i.e., process status) command is used to provide information about the currently running processes, including their process identification numbers (PIDs). ... TIME is the amount of CPU (central processing unit) time in minutes and seconds that the process has been running.

What is VSZ in ps command?

VSZ is the Virtual Memory Size. It includes all memory that the process can access, including memory that is swapped out, memory that is allocated, but not used, and memory that is from shared libraries.