ps is a command for printing information about running processes

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ps command not giving output in home directory

I am logging into a solaris server, switching to bash, then switching to another user "sruser" and switching to bash. /home/batch/sruser/ is the home directory of the user "sruser". The issue is ps ...
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Command line options of rackup are not shown in ps output or procfs

As you know if you wish to get command-line runtime arguments for running command you can parse ps -e or /proc/<pid>/cmdline. But I have encountered issue when this method returns only command ...
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How to start two processes piggie-backed? So the first finishes when the second finishes?

I'm running a script with ssh commands to a server behind a jump-host. Each time I want to run a command on my server in the secure network, I need to ssh into the jump-host (bastion) server and run ...
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127 views

Translate GNU ps flags to standard flags

I'm using oh-my-zsh and its ssh-agent plugin on OSX, but lately somebody upstream decided to use ps x. I'm not entirely sure what that even does, since I haven't used a GNU userland in something close ...
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439 views

HP-UX SZ limit for ps?

Right so I have a fun little thing that I'm deathly confuzzled about. I have a program that is running and I am getting the following: using top: SIZE RES 1639M 359M using ps: SZ 20171 ...
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Understanding “vncserver -list” with respect to Xvnc processes

I have a pretty standard setup on a Centos 6.5 VM. I've configured VNC sessions to start at boot per CentOS's wiki VNCSERVERS="1:root 2:moe 3:curly" VNCSERVERARGS[1]="-geometry 640x480" ...
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What is the difference in CPU utilization between 'ps aux' and 'ps -ef'?

I use Ubuntu 12.04.1 Linux. I see a difference between %CPU and C output format of ps command for a process. It is not clearly noted in the ps man page. Man pages says: CODE HEADER ...
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Can I get WCHAN from ps on Mac OS X 10.7.4?

From the manual it seems that ps -AO wchan should tell me what everything is sleeping on, but everything comes up as -. (And nwchan as 0). Did they do away with the old sleep()/tsleep() interface in ...
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How to check the process along with its arguments in process list?

I have written a script where i need to pass several arguments with the same script, the script is being executed after a certain time using cron. In order to make sure that there are no multiple ...
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405 views

Get a refreshing list of running specific processes

I want to monitor running python processes with VSZ, RSS %MEM, %CPU etc. One of my priorities is a list refreshing every X seconds. I managed to come to the point of obtaining a refreshing list of ...
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How to find the PID of nginx process

I am trying to fix a problem with nginx and think that there is an nginx process running on my machine. When I run this command I get this output. $ ps aux -P | grep nginx 1000 3947 0.0 0.0 ...
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How can I get a list of long running processes that match a particular pattern?

I know that I can do ps aux | grep cgi to get a list of all cgi scripts currently running, and ps -p [pid] -o etime= can get me the run time for each pid; is there a way to combine the two, or better ...
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why “ps -ef -u root -U root” also displays user processes?

ps -ef -u root -U root Also displays processes whose user is not root (the current user). Can someone explain me why ? -u : EUID -U : RUID
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Alternative to `pkill` or `pgrep -f` on cygwin?

Suppose I have starting my process like: java -DSOME_STRING -jar foo.jar Then on linux, I can use the following to find or kill this process: pgrep -f SOME_STRING pkill -f SOME_STRING However ...
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How to show CPU time for processes via top without 'root' procs

Okay, So I've been attempting this for about three hours now without success. How do you search/display/use the top command (or ps command if it works...) to output a list of all procs, sorted by CPU ...
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115 views

How to set an indentifier for multiple background processes?

I'm creating a custom game server and I have a .jar file to run it. I need to launch multiple game servers on a single virtual machine(like 15). I found, that I could just run them like this: java ...
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process id and killing process - ps commmand

Please see the output of below ps command: abc@smaug:~/Desktop$ ps ax | grep firefox 2213 ? Sl 2:01 /usr/lib/firefox/firefox 2644 pts/0 S+ 0:00 grep --color=auto firefox Please ...
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A more readable ps

Are there any tools that improve the readability of ps in the same spirit as ack for grep? This would be especially on OS X where ps does not even have options such as --sort user. So far the nicest ...
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How do I convert the output of ps(1) to JSON?

I want to convert the output of the command ps to JSON in order to process it as structured data (with jq in this particular case). How do I do that? The output looks like the following: PID TTY ...
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“ps” command doesn't return to prompt

I have this linux box that I need to maintain periodically. To do that, I issue a ps command programmatically and check the running processes. But as shown in the screenshot, sometimes, the ps ...
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I want to kill all processes that result from the following command

The following command will display all the PID's running for vmstat1: ps -ef | grep "vmstat 1" | awk '{ print $2 }' My question is, how do I kill them all, if there's like 20 of them at once?
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Where to find the source code for ps?

I want to check out the source code for commands such as ps. It seems to be impossible to search LXR (linux.no) for "ps". Where do I find it?
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Is there any way to hide kernel threads from ps command results?

When I type ps -ef , there are lots of special kernel thread processes showing. I am not interested in kernel threads; I am only interested in user process/thread. Is there a way that I can hide the ...
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Add sid field to ps -f output

I am reading the ps man page and there is something I don't understand. -f does full-format listing. This option can be combined with many other UNIX-style options to add additional columns. ...
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How do I tell `ps` to use all available columns?

To specify columns, I can use ps's -o option: ps -o pid,cmd How can I tell ps to output all of its available columns?
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Print like Firefox

Made a CLI script to print Wikipedia articles: WIKI='https://en.wikipedia.org/w/index.php?title=' TITLE=$1 PRINTABLE='&printable=yes' SRC=$WIKI$TITLE$PRINTABLE HTML=$1".html" PS=$1".ps" wget ...
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Why do processes not fill up empty process IDs

Everybody knows that PID number 1 is systemd (or something equivalent). And every process after that takes another PID, counting up. However when there are 50 processes running (up to PID 50) and ...
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How to get the title of the media playing in VLC or other media players using CLI?

I want to get the title of the media playing in VLC using the Command Line. The closest thing I currently have is this command. ps aux | grep vlc The output is pc 27636 2.1 2.3 1261964 ...
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Filtering and extracting PIDs as space-separated list from ps using sed

I want to filter and format the output of ps -ax -o pid,command, but not sure what pipe to use for it. I want to filter those lines matching a fixed string at a fixed position, just keep the pids for ...
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327 views

Using ps and watch to observe parent and child process

I got a parent and a child process running, I know their IDs. How do I utilize 'ps' and 'watch' to filter them out, so that I can see their used CPU times? I tried 'watch ps -u USERNAME', but as you ...
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Is “ps -ef” deprecrated?

I was doing some work on a linux and the system admin told me that ps -ef is deprecated though it still works. I can't seem to find any documentation towards the same. Has ps -ef really been ...
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105 views

Does this dispatcher produce zombie process?

I have such a dispatcher shell script. while read line do java TestProg $line & done < $tasklist On the zombie process Wikipedia page, it says if a parent fails to call wait, the ...
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parsing process ID/names from /proc, thread IDs

When I'm parsing process IDs from /proc, obviously each thread of a process gets its own ID. And I realize that all the threads in that same process can be gathered from /proc/${pid}/task/. But my ...
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1answer
81 views

See if a script is running when using #!/usr/bin/env

I have tried migrating the shebang for my bash scripts from #!/bin/bash to #!/usr/bin/env bash, and some of them were broken because they relied on this code that checks for existing instances of ...
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How to view all ancestor processes?

How can I view all the ancestors for all instances of a given process name?
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1answer
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Strange behavior of 'ps -o pgid'

Intro: I have a daemon, which spawn processes and I have to stop it all gracefully. The solution I found on web based on pgid: group_id=$(ps -o pgid= $(cat $pidfile)) if [ ! -z $group_id ]; then ...
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1answer
383 views

How to start (or find) a process with RUID different from EUID?

Inspired by one of the previously answered questions, I tried executing a program by a user who was not its owner -- and the process's RUID and EUID remained the same. (Unless I read the answer wrong ...
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1answer
437 views

monitor multiple pids with top

I want to monitor memory usage for several processes and came up with a command like this: ps aux |grep -e postgres -e unicorn -e nginx|cut -d' ' -f2|for i in $(xargs); do echo $i; done 16112 16113 ...
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Does pgrep output ever include the parameters supplied to the process?

The snippet below (from an existing script) is used to check the xvfb processes and whether they are listening on a specific port: my_list=`pgrep -u $CurrentUserID -fl Xvfb | grep :${XVFBPORT}` ...
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1answer
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How do I print the process name next to the process ID number in a file?

I'm redirecting results for something into a file and I also need to find the process name and ID number and redirect it to the file as well. I'm guessing the process name is the command in which I'm ...
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265 views

How can I automate this manual task of finding a particular ancestor process from a given pid or command?

I know the full command "/bin/child_process" or its pid (3996 in this case) and I'm running ps auxf and then visually identifying its ancestor process /bin/parent_process foobar. root 3227 0.0 ...
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How can you print arguments of command in ps?

sudo ps o gpid,comm reports something like 3029 bash but the command has parameters --arbitrary -other -searchword is there a way to display these arguments?
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Getting transient PID from log into a PS search before it dies

I have a transient prelink process populating our audit log, but we're not sure what the process is. The error log gives us the PID, but it disappears pretty much instantly, as the process finishes ...
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1answer
3k views

How is it that I can attach strace to a process that isn't in the output of ps?

I'm trying to debug why our integration tests are taking so long and it looks like they're hanging part way through. I logged onto our test service and saw the following behaviour: root@colossus:~# ...
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Why does my Linux server hang with “ps aux”

I have a server running scientific computation applications. It is SLES 11sp3. Here are some of my observations: I could login to the server with ssh. But for some reason I don't understand, when I ...
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List all processes without controlling terminal (only)?

Is there a portable way to do this? On Linux, I can use ps a -N but this option isn't available on other (POSIX) systems. Of course I can use grep '^?' with, say, -o tty,... but is there something ...
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1answer
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how to get processor that thread is currently assigned to?

I've found such column in ps -elF: PSR processor that process is currently assigned to. I need something similar but for threads. ps huH p 1234 prints threads of process 1234, can I somehow add ...
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Restrict a user from viewing other user's processes [duplicate]

Suppose there are two users : user1 & user2. Now we know that if I give top -u user1, I can see only the process respective to user1. But if I do top -u user2, I can see all the process running ...
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1answer
148 views

“ps” output and comments

I'm pretty sure you cant do this but maybe someone has some weird hack... Is there a way to get comments (#blahblah) to show up in ps output? My problem is that i have a script, lets call it ...
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PS command ouput limited to 80 bytes only [duplicate]

Possible Duplicate: How can I get a full process list in solaris, without truncated lines? The output of ps command only returns 80 bytes. Below is the text from manual pages of Solaris ps ...