11/13/2023 0 Comments Ps ef linux commandUntil now, you have learned the basic syntax and the working of the ps -ef command in Linux let’s dig into some examples for a practical demonstration of the command. -f: An option to display the output in a full format, which includes additional details such as process owner, parent process ID ( PPID), CPU usage, and memory usage.-e: An option to include all running processes in the output, including those not associated with the current terminal session.ps: The command to display information about running processes on the system.The components of the ps -ef command are as follows: Well, let’s write it and elaborate on the entities in it. The basic syntax of the ps -ef command is the same as it is being written, i.e., ps – ef. However, all the practical demonstration shown in the post is carried out on Ubuntu 22.04. Considering the importance of the ps -ef command, this post will list a detailed explanation of the command with the help of suitable examples.Īlthough, the ps -ef command is applicable on all the Linux distributions. The ps -ef command has numerous benefits, such as process identification, system monitoring, process management, security auditing, etc. The ps command stands for “process status,” and the -ef option tells the command to display information about all processes in a full format. While the number of options available is rather broad, you'll probably find some views that help you see just what you're looking for.In Linux, ps -ef is a command that displays information about running processes on the system. Hierarchical displays can often make the relationship between processes and files easier to understand. With the -f option, tree will show full pathnames. The tree -d command will limit your display to directories. You will see a lot more detail if you run a command like this as root ( sudo tree /proc) since much of the contents of /proc is inaccessible to regular users. If you use the tree command to look at /proc, your display would begin similar to this one: $ tree /proc It provides a nice tree-like view of directories and files. While the tree command sounds like it would be very similar to pstree, it's a command for looking at files rather than processes. Output from pstree -a └─wpa_supplicant -u -s -O /run/wpa_supplicant Here are some quick (truncated) examples. Some options to consider when using pstree include -a (include command line arguments) and -g (include process groups). Notice that many parent-child process relationships are displayed on single lines rather than subsequent lines. While even pstree offers many options, the command provides a very useful display on its own. You can select whichever options that give you the view of processes that works best for you.Ī similar view of processes is available using the pstree command. Note that these examples are only a sampling of how these commands can be used. There's also a -forest option that provides a similar view. x lift the "must be associated with a tty" restriction H show the process hierarchy (i.e., the "forest format") The options used in these commands represent: -e select all processes The -exjf option string provides a similar view, but with some additional details and symbols to highlight the hierarchical nature of the processes: $ ps -exjf
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