Questions tagged [ps]
For questions pertaining to ps, a command for printing information about running processes. Use this tag for questions about ps itself or questions about issues arising from using the ps command-line utility.
605
questions
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Why does ps not exit when listing full command line arguments?
Any time I attempt to run the ps command or another similar command in a way that would make it output the arguments for any process, the command runs and produces output, but then freezes, entering ...
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votes
2
answers
53
views
How do I list all background processes?
Is it possible to list all running background processes with the ps command, or is the only option for getting a list of background processes the jobs command?
- 115
0
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0
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24
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ps command: Practical difference between the -p and -q options [duplicate]
According with man ps exists:
-p pidlist
Select by PID.
This selects the processes whose process ID numbers appear in pidlist.
Identical to p and --pid.
-q pidlist
Select by PID ...
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1
vote
1
answer
28
views
ps command: strange behavior with 'O' option, extra column/header does not appear as expected
About the ps command - to add one/many extra column/header with the default headers according with the option(s) used with the ps command - it through O the option.
Intro
If ps x is executed the ...
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3
votes
1
answer
55
views
ps command: how to know all the headers with their respective descriptions?
Through the following valuable tutorial:
Ps Command in Linux (List Processes)
If the ps -ef command is executed then the output has the following header:
UID PID PPID C STIME TTY ...
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0
votes
0
answers
28
views
What does '-x' mean in the context of the 'ps' command?
If is executed ps x (observe there is no -) then the output is as follows:
PID TTY STAT TIME COMMAND
2489 ? Ss 0:00 /lib/systemd/systemd --user
2490 ? S 0:00 (sd-pam)
...
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0
votes
0
answers
27
views
ps command: what does "/bin/login -p --" exactly mean? What is its purpose to be shown?
Through Virtual Box for Ubuntu Server, having:
the 6 tty being logged with 3 different users (2 users in 2 tty, for example user1 logged at tty1 and tty3, user2 logged at tty2 and tty4 and so on)
3 ...
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0
votes
1
answer
28
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ps command: How generate the report of processes but according with only either tty or pts?
Through the ps --help all command about the option(s) related with tty exists the following:
-a all with tty, except session leaders
a all with tty, including ...
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4
votes
2
answers
114
views
What does '-P' mean in the context of the 'ps' command?
If is executed ps -p 3384 3395 (observe -p is lowercase) then the output is as follows:
PID TTY STAT TIME COMMAND
3384 tty6 S+ 0:00 man ls
3395 tty6 S+ 0:00 pager
Until ...
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1
vote
1
answer
41
views
How to display process title by ps?
As per setproctitle(3), the process title appears on the ps command. But after looking up the ps(1), I still have no idea how to display it by ps.
- 101
0
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2
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25
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ps aux --headers problem on openSUSE Leap 15.3 when redirect output
The following works ok on openSUSE Leap 15.3. As in the header line is repeated for each screen of output when I scroll the screen back with the scroll bar on the terminal:
ps aux --headers
But when ...
0
votes
1
answer
20
views
full command is missing in ps aux output ubuntu 20
Version:
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 20.04.4 LTS
Release: 20.04
Codename: focal
When i check my process' with htop or ps aux i cant see ...
- 3
-2
votes
2
answers
35
views
how to kill huge process by killing the daemon itself
on our rhel machine we saw huge lines as ( total lines numbers are 856 )
that cause very high cpu load average
root 110490 108840 0 07:32 ? 00:00:00 /usr/bin/python /var/tmp/get_params/...
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0
votes
1
answer
73
views
`exec env` vs `env`
Both exec and env don't fork, see the following example:
docker run --rm -it ubuntu:18.04 sh -c 'exec sleep 1 & ps -Ho pid,ppid,cmd'
PID PPID CMD
1 0 sh -c exec sleep 1 & ps -Ho ...
- 1,039
0
votes
2
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61
views
How to pass output of ps x | grep rclone to kill command?
This is the output:
$ ps x | grep rclone
7111 ? Sl 0:00 rclone mount xxx
7112 ? Sl 0:00 rclone mount xxx
7113 ? Sl 10:16 rclone mount xxx
9843 pts/1 S+ ...
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0
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0
answers
34
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NFS: how can i make nlockmgr relinquish a port
I was running Nfs-server on a rhel7.8 machine. Now the NFS server has been stopped but a Port 35191 is listening on the server, verified it using netstat and telnet. I tried various ways to find the ...
- 1
0
votes
1
answer
24
views
Summary Report of Running JVMs
Would like to output a summary of the currently running java processes. The fields I am interested in are PID, start time, min heap, max help and name of the app. The PID and start time are always at ...
- 3
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0
answers
20
views
How can I best track agrs in the environment without using ps?
I am working with a customer BusyBox v1.23.2 container, trying to track args being passed in the environment. I wanted to use pslogger to show when foo is sent in the environment.
However, the ps tool ...
- 101
0
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0
answers
17
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How can a process have this value for a command? [duplicate]
I'm wondering how a process can have this command line
~ % pgrep -ai dhc
1681 dhcpcd: [master] [ip4] [ip6]
Same for ps
~ % ps -o command 1681
COMMAND
dhcpcd: [master] [ip4] [ip6]
This seems to come ...
- 309
0
votes
0
answers
41
views
Process state "S+" [duplicate]
One of the processes state in Ubuntu is interruptible sleep, which is denoted by "S" . I have two questions regarding this state :
What is the exact meaning of the word interruptible in ...
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0
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21
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is there a cli like : `cpu-cli app.sh`?
is there a cli that get the avg of CPU usage launching like usual cli tool like
$ time app.sh
without avoiding the forked process
$ cpu app.sh
avg 22.2% CPU usage
max 55.5% CPU usage
min 11.1% CPU ...
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2
votes
1
answer
38
views
two terminals, one not showing processes
While I have two terminals open, when I run [program name] & in one terminal, why is it that when I then run ps on both terminals, only the one I have used to run the program shows the processes?
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2
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0
answers
16
views
Meaning of `u k-pcpu` options in ps
In this answer to this question, user @doneal24 suggests using, in part, the following call to ps to print information about the process with ID PID:
ps u k-pcpu -p $PID
According to ps's man page, ...
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4
votes
1
answer
121
views
Full command line in ps -o call
On Ubuntu 20.04.3, calling ps -e -o args,pid,etime,%cpu,%mem --forest | egrep "firefox|PID" | grep -v grep gives me the following result:
COMMAND PID ELAPSED %CPU ...
- 43
2
votes
1
answer
71
views
Why does `ps e` show more processes than `ps`?
From the ps man page:
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.
On my Ubuntu system, ...
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1
vote
1
answer
148
views
top shows different pid for threads of same process. How to fix it?
when i do a ps -efT (where -T = Show threads, possibly with SPID column.), i see all the threads have the same PID, which is as expected.
myroot 24958 24958 7942 0 20:20 pts/12 00:00:00 java -...
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0
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1
answer
17
views
Xen: is possible to see processes of the domU on dom0?
I have installed on a Debian dom0 a paravirtualized domU(Opensuse)
When I use lxc I can see the process with the "translated" uid
for example, on a Slackware lxc "host" I can see ...
- 11k
0
votes
2
answers
246
views
how to find the number of open files per process
we have kafka service ( as systemctl service )
and we configured in that service number of open files
example:
[Service]
LimitMEMLOCK=infinity
LimitNOFILE=1500000
Type=forking
User=root
Group=kafka
...
- 10.9k
0
votes
1
answer
57
views
How many bytes is a kilobyte in `ps` command?
I use ps command to get information about the memory consumption of a process. According to the man page, the memory size unit is "kilobyte". Is that 1024 bytes or 1000 bytes? Can you ...
- 101
2
votes
3
answers
252
views
How to list all processes by non-root users?
I want to see a list of processes similar to what ps aux outputs but not show any root processes.
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votes
1
answer
116
views
How to reconnect to the same terminal where your ssh connection was lost?
I did a ssh to my server and started the yocto build on that server.
Howeve, I lost my connection and now when I reconnect it I don't know how to see how my existing build is going on?
I want to see ...
0
votes
1
answer
76
views
CPU LOAD AVRG + how to deal process with D state
we can see from our RHEL 7.6 server ( kernel version - 3.10.0-957.el7.x86_64 ) that following process are with D state ( they runs from HDFS user )
Note - D state code means that process is in ...
- 10.9k
0
votes
2
answers
24
views
How do I determine what task is launching another task
I am dealing with some essentially virus-like behavior that I'd like to end.
A task 'foo' is running on my computer, generating a lot of calls that are bringing my system performance to its knees. I ...
- 155
4
votes
1
answer
519
views
What is the difference between "ps -eu" and "ps -u"?
I check the manual of ps, and it said -e will list all processes, while -u will list processes for a specific user.
So I try to use ps -eu myaccount | wc -l and it outputs 280.
But if I use ps -u ...
- 181
0
votes
1
answer
61
views
Sorting Linux ps command
I am trying to print a process tree of only my login on a Linux server. I have used:
ps -e --forest
to print the process tree, but it gives the process tree of all other users in Linux. What can I do ...
0
votes
1
answer
60
views
Why don't I find ping process in ps list?
Why can't I see the 'ping' process in my 'ps' listing when I started it as a regular user?
The ping binary has setuid bit,
ls -l /bin/ping
-rwsr-xr-x 1 root root 64424 jun 28 2019 /bin/ping
Running ...
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0
votes
1
answer
38
views
Huge delay in ps output from systemd in Azure Linux
I'm getting huge a delay in ps output -- when it outputs the first line (systemd-networkd), there is a huge delay about 20 to 25 seconds, then the rest are displayed instantly.
$ ps -eaf
. . .
systemd+...
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votes
2
answers
67
views
How to set "unlimited" screen width for `ps` to prevent it from truncating output?
ps truncates output when standard output is a terminal to accommodate the terminal's width.
I see from ps --help output that ps supports --width and --lines options for controlling the screen width ...
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1
vote
1
answer
90
views
Why the value of PRI is different in ps and top?
nginx PID is 19910
The value is 19 in ps -eo pri
ps -eo pid,ppid,ni,pri,psr,pcpu,stat,cmd |head -n1;ps -eo pid,ppid,ni,pri,psr,pcpu,stat,cmd |grep nginx
PID PPID NI PRI PSR %CPU STAT CMD
19910 ...
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2
votes
1
answer
305
views
What does it mean if the TTY field is a question mark?
What does it mean when ps lists a process's TTY as ? instead of a tty device name/number?
For example:
piotr@thinkpad:~$ ps -A | head -2
PID TTY TIME CMD
1 ? 00:00:04 ...
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1
vote
1
answer
54
views
Is it possible to display NodeJS app path inside top command's output?
I'm trying to monitor system processes cpu & memory usage on a Ubuntu server with many running NodeJS applications.
top command only shows "node" without specifying which script is it.
...
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0
votes
1
answer
40
views
capture commands from each PID and calculate the memory consuming of command in GIGA ( with sort way )
I am running this approach in order to verify the commands that consuming memory from high to low on linux redhat machine
I wrote this approach as 1024/1024 , in order to get the values in GIGA
ps -...
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2
votes
2
answers
68
views
Prevent a disabled account to run processes
Daily I look at processes on my Debian (Stretch) server using something like top or ps -aux and I see an account which is inactive
$ sudo passwd --status myuser
myuser L 12/12/2016 ...
yet, ps and ...
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0
votes
1
answer
651
views
How do I do "ps" command on a thread?
The ps command can be done in terminal to view information about a process. For example,
#list processes
ps aux
#with executable paths
ps -ef
#path for a specific process
ps -p [pid]
However, if a ...
2
votes
1
answer
94
views
zsh completion for kill listing unexpected "0"
I have following in my .zshrc:
zstyle ':completion:*:kill:*' command 'ps -u $USER -o pid,%cpu,tty,cputime,cmd'
When I press TAB, in addition to processes being listed, there is always a last line ...
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0
votes
1
answer
126
views
Command, args and process name
I learned recently of pidof, and I was comparing it to pgrep. While doing that, I noticed that pidof returned several PIDs for Firefox, while pgrep returned just one.
I checked pgrep's man page and ...
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0
votes
0
answers
117
views
bash to kill a process by name
I have these attempts to shut down processes (and childs) by name (I got both from this site and adapted them):
read -p "Set process name: " PS
# first option
f() { ps ax | grep "$1&...
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2
votes
1
answer
116
views
Kill processes only if a specific number of PIDs match criteria
I am trying to improve this one liner I use as an (abused) docker-compose healthcheck that runs inside a container:
ps -C program.bin -o pid,pcpu --no-headers | awk '$2 > 98 {print $1}' | xargs ...
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-1
votes
1
answer
742
views
Difference Between ps -ef and ps -auxwww?
Can anyone explain to me what is the difference between
ps -ef
and
ps -auxwww
with some examples?
I just want to know the difference between them. I have checked a post that provides the ...
0
votes
1
answer
132
views
What does "user # # # #" mean in "ps -eo args" output?
I am trying to determine what these running processes are on a lab machine I'm trying to use. I've run the following to determine the top 5 cpu-using processes:
ps -eo pid,user,pcpu,args | sort -k3 -n ...
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