What is ps ef command9/23/2023 ![]() So the actual command run is grep pwd.įor more information refer this link.(Thanks to for this information). , then the command is run and the output (what is printed to the screen) is caught and substituted to where the original $() or `` string was. ps -ef is the syntax to get information e very process with a f uller-format listing on Unices based on AT&T's Unix Support Group (USG), the part of AT&T that was commercialising Unix. e - show all processes, not just those belonging to the user. There are and have been different flavours for historical reasons. The following example shows output from ps -ef. See for more information on pipes and streams. The following example shows output from the ps command when no options are used. Use man ps and man more to see the description for these commands. To see every process on the system using standard syntax: To see every process on the system using BSD syntax: To get info about threads: To see every process running as root (real & effective ID) in user format: ps -U root -u root u To see every process with a user-defined format: ps axo stat,euid,ruid,tty,tpgid,sess,pgrp,ppid,pid,pcpu,comm Pr. Here is a full breakdown of this command: ps - list processes. 2 Answers Sorted by: 1 With ps -ef more you pipe the output from ps to more, so you can scroll through the results of ps. Saji 14242 14148 0 15:26 pts/7 00:00:00 grep -color=auto /home/sajiĪs you can see the output shows the lines matching my current working directory, which is /home/saji. e and -f are options to the ps command, and pipes take the output of one command and pass it as the input to another. Saji 2855 2814 0 09:51 ? 00:00:00 /usr/bin/gpg-agent -daemon -sh -write-env-file=/home/saji/.gnupg/gpg-agent-info-geeklap /usr/bin/dbus-launch -exit-with-session gnome-session -session=ubuntu Saji 2854 2814 0 09:51 ? 00:00:00 /usr/bin/ssh-agent /usr/bin/gpg-agent -daemon -sh -write-env-file=/home/saji/.gnupg/gpg-agent-info-geeklap /usr/bin/dbus-launch -exit-with-session gnome-session -session=ubuntu ![]() Prints out all the lines matching the output of the command pwd(which will be the path your current working directory), from the output of ps -aef. ![]() Grep is used to print lines matching a pattern. Anyway, if for some reason you want to kill it with the kill command, there is the pidof command that gives you the pid of a running program. The c option, the format keyword args, and the format 1 Answer Sorted by: 1 Like Kusalananda said in the comment, Tomcat has a shutdown.sh script in the bin folder. Where they differ is output format specifier, -f is 'full', while u is 'user-oriented'. In that aspect -e and ax are completely equivalent. Threads) and LWP (thread ID) columns will be added. 2 Answers Sorted by: 70 Both list all processes of all users. It also causes the command arguments to be With many other UNIX-style options to add additionalĬolumns. Processes not associated with a terminal. The ps command displays information about your running processes, and optionally the processes of other users. ![]() O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.From the man page for ps: -a Select all processes except both session leaders (see getsid(2)) and Get Linux Pocket Guide now with the O’Reilly learning platform. Remember, you can extract information more finely from the output of ps using grep or other filter programs. Particular processes 1, 2, and 3505: $ ps -p1,2,3505Īll processes with command lines truncated to screen width: $ ps -efĪll processes with full command lines: $ ps -efwwĪnd all processes in a threaded view, which indents child processes below their parents: $ ps -efH If the options seem arbitrary or inconsistent, it’s because the supplied ps command (GNU ps) incorporates the features of several other Unix ps commands, attempting to be compatible with all of them.Īll of user smith’s processes: $ ps -U smithĪll occurrences of a program: $ ps -C program_name Ps has at least 80 options we’ll cover just a few useful combinations. The ps (Unix) - Wikipedia command stands for process status, and the -ef option tells the command to display information about all processes in a full format. The ps command displays information about your running processes, and optionally the processes of other users. ![]()
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