ps is a command for printing information about running processes

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Bring process to 'foreground'? [duplicate]

I am using an SSH client to connect to a Solaris server. I had a process running but my connection disconnected. I reconnected and can see the process running when I do ps -al. How can I bring this ...
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Call 'ps' as a normal user in Linux

A brief introduction to my question: the command ps will print the information of system processes. But when I login as root and change the permission x of ps chmod -x /bin/ps chmod u+x /bin/ps ls ...
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Why I can not use all the 100% potential of CPU?

I am using my computer clusters to run a MD C program but I can not use full potential of those clusters. But the this node have 16 CPUs and I also only give 15 jobs for those CPUs. But I can not ...
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718 views

Meaning of the pstree output

-bash-3.2$ pstree 27108 Script.sh---java---15*[{java}] What does this 15* mean here, also any meanings defined for [] & {} in the context of command?
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ps output differs when run from command line and from script

I have to create list of PID's of the running processes. Here is the script ps echo "fields are " ps | cut -d' ' -f1 ps is showing PID TTY TIME CMD 2168 pts/4 00:00:00 sh 2177 ...
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Using regex to see if a UNIX process is up

In UNIX, I am checking to see if a process is up by executing the following command; E.g. psg dtllst pe99 This returns the following output if the process is running; UID PID PPID C ...
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Grep command using contents of a heredoc

I'm creating a script to update a remote computer and I want to know if any user is using the computer before I update. I have a list of users and I created a heredoc with all of them. The command I'm ...
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405 views

List of running processes

There is a top command to show running processes. I would like to print sorted list of unique values in field COMMAND. There is my solution for this task $ top -b -n 1 | tail -n+8 | awk '{print ...
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I can't find the process sending mail?

I did something stupid and ran an awk that runs a while loop that sends an email every 10 seconds. I ran this as a background process: egrep '^[1-9]' /etc/hosts | grep -v 'localhost' | awk '{ ...
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View full commands in ps output

When running ps with the -f option in PuTTY (to see the command corresponding to each process), lines which are longer than the terminal width are not fully visible (they are not wrapped on multiple ...
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87 views

Is it better/preferred to kill all child processes by using PPID or PGID?

I need the ability to kill all child processes running under a particular parent. What would be the better option to do this? Using PPID or PGID? Something like this: pkill -TERM -P Would kill ...
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How to see what processes WERE running?

Is there a chance to get the processes that RAN before my system crash? EDIT What I really want is to see the past processes. My system crashed & I want to know if a specific process was the ...
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How can i get the process with the biggest pid?

How can I get the process with the biggest pid using ps?
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Possible to identify defunct process from pgrep

I am using pgrep for a bunch of things, however I can't get pgrep to list if the process is defunct. Running ps adds to the end of the item <defunct> but pgrep does not, is there anyway to do ...
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25 views

pgrep only current user

I was wondering what the arguments were for pgrep to make it act only on the current user. -u makes me provide names, I don't know the name of the current user, I just know that I need current user ...
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43 views

List superuser processes

I am trying to list the superusers processes currently running in my Kali distro. Using "pgrep -f sbin" I figured that would do the trick, however it only lists the PID numbers, not the actual name of ...
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Output both ps and Date on one line, to a file?

I am building a rudimentary logging script, and want to capture the output of ps up 12345 So far I have: DATE2=`date +%Y-%m-%d:%H:%M:%S` echo ${DATE2} >> $filename ps up 12345 --no-headers ...
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ps aux on aix,how to get PPID?

I know is possible with ps -ef But i want to get it with ps aux How to do it on aix? Thanks
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Get the process start time irrespective of NTP updates

I'm trying to record the start time of a process kicked off by an @reboot cronjob. I'm using ps -p $$ -o ltime= presently, but I've run into a catch. My machine (a Raspberry Pi) connects to the ...
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What are these processes and why can't I kill them?

(On OS X 10.11.3) I'm having a problem starting a java process that needs to listen on port 8040. Getting a BindException. So seems like somebody else is already listening on it. A quick check ...
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Search for processes which are CPU consumming

I can track the process launched by the user4 with awk: ps aux | awk '$1~/user4/' And also to track what process consume more than 10% CPU: ps aux | awk '$3> 10' Hoe the question is not too ...
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Find all idle screens

I have started a few processes in the past initiated via the screen command. Most of those scripts have already finished running, but looks like the screens are still sitting there idle. I can see ...
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Difference between ps process httpd and deamon process httpd

When I'm running command ps aux | grep httpd , it shows that httpd is in running state , but on running systemctl status httpd - its inactive and disabled. Why is it so?
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Disabling column names in ps output

How to format output of ps -p command? To not show me something like this: PID TTY TIME CMD but just PIDs. I'm using Linux.
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Figure out the PID of exact node.js application

Here is an output of my ps aux: ps aux | grep "node" root 2501 0.0 3.4 720400 68512 ? Sl 16:09 0:03 node /etc/skbx/host/skbx.js 8081 tula13 8082 8084 8085 10.8.0.6 root 20586 ...
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Why are arguments of a command altered when viewed by ps?

When I run my favorite app, why the arguments look different when viewed by ps? $ redshift -l 12.94:43.75 2>/dev/null 1>&2 & [1] 8637 $ ps -o cmd= -C redshift redshift -l 12.94 43.75 ...
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Killing PGIDs but proceses are respawning, how do I make it persistent?

I ran ps aux --forest -j to see parent and child processes. Here is an example: root 3744 3744 3744 0.0 0.2 77084 4160 ? Ss 09:34 0:00 /usr/sbin/cupsd -f lp 3747 3747 ...
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process id and command

I want to write the process id and command of all processes with some name and from some user (for example root and init). What should I do? ps -f -u root -C init or ps -f -U root -C init ...
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Asymmetric ESTABLISHED session in netstat

On the first host, root@xxx:~# netstat -natup | grep xxx tcp 0 0 10.2.5.3:40740 xxx:10051 ESTABLISHED 1482/zabbix_proxy: we can see that a connection has been established with ...
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371 views

Disowned “Stopped” job process still appears in process table

I want to know why after disowning the stopped process, it is still appearing the process table PING www.google.com (74.125.130.106) 56(84) bytes of data. 64 bytes from 74.125.130.106: icmp_seq=1 ...
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248 views

Count the total number of sub-processes (recursively) spawned by a command

How do find the total number of child processes (recursively) spawned by a script? For profiling purposes, it is sometimes important to count the generated sub-processes of command, script, etc. ...
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711 views

List connected via SSH users [duplicate]

I checked this answer and this option - it is good, but it requires sudo rights. I need that this command may be performed by any user, for this reason I am using next command ps -ef | grep sshd: | ...
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Missing space in `ps` output near EOL

Note the missing space before foo: $ ps wafux | grep foo [....] 21742 0.0 0.0 10688 2296 pts/2 S+ 23:30 0:00 \_ grep --color=autofoo $ echo $COLUMNS 99 Compare with this: ...
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awk - Group by and sum column values

I have command to list system process by memory usage: ps -A --sort -rss -o comm,pmem Which list a table like COMMAND %MEM firefox 28.2 chrome 5.4 compiz 4.8 ...
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The program pstree and htop showing threads with unique PIDS. How is this possible?

I ran the program pstree -p 31872 which printed the following output: ruby(31872)─┬─{ruby}(31906) └─{ruby}(32372) The man page for pstree says: Child threads of a process ...
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GREP for Processes by Directory and Kill it

I'm trying to grep for processes that originate from the /Applications/ directory (to kill them), but my grep command keeps catching some false ones as well. What am I doing wrong here? $ ps -ef | ...
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How can I find the process ID of a command started in another terminal?

If I run sleep 30 in one PuTTY window, how can I find the process ID of the sleep command from another PuTTY window?
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Difference between top and ps output

I have seen What is the difference between ps and top command? but I think my question is unrelated. My system is Lubuntu 13.04. I run top in one lxterminal window and ps -eo %c%C --sort -%cpu | head ...
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difference between bash, -bash and /bin/bash in ps output [duplicate]

Someone had spawned a while true loop in bash (logged in as root) on a server. It kept spawning processes, which fortunately exited but I needed to kill the parent. I came to know it was spawned ...
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415 views

Convert ps to pdf by ps2pdf, but the pdf file is not well-behaved

I have a ps file,and converted it to a pdf file using ps2pdf. ps2pdf elden.ps elden.pdf When I open the pdf file in evince, and try to select some text in it using my mouse, the selected content ...
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418 views

Linux + Solaris how to verify the last execute process from list of process

I need advice: How to verify which is the last scan_sys.sh process that run in my linux or solaris ? my target is to kill all scan_sys.sh process , except the latest scan_sys.sh ( the last execute ...
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Script to ensure that only one instance of Oracle is running

I'm an Oracle DBA and need help/suggestion to understand a weird situation that came up today. One of our DBA job failing with saying 'Already its running' from Tivoli scheduler. However that is not ...
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pgrep full match not work, only part, why?

I use pgrep from procps-3.3.10. If I have executable aout_abcdefgh_ver27, then pgrep aout_abcdefgh_ver27 returns nothing, while ps aux | grep aout_abcdefgh_ver27 returns the expected result: ps ...
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View current user process ancestors and formating the output

I'm using ps -eo ppid,pid,cmd to view all process, and how can I format the output to view like below? Only given PID and its ancestor will print (until init). 23464 current | 23211 bash | ...
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92 views

In which directory is node running?

In trying to figure out how some application that listens on port 8088 is running, I see that it has PID 15020: $ netstat -ntulp Proto Recv-Q Send-Q Local Address Foreign Address ...
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Why is my second tmux session not shown in ps aux or htop but in tmux list-sessions it is?

I start two new tmux sessions, the session name is variably build from a timestamp. (the commands create a new, detached tmux session, which first changes the directory, lists the content and then ...
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Suppress warning from ps -aux on Linux

When I run the ps command i get a warning saying Warning: bad syntax, perhaps a bogus '-'? See /usr/share/doc/procps-3.2.7/FAQ. How do i suppress this warning? Is there some system setting that i ...
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top/ps/mpstat showing different output

When my top shows a load of 19/20 and my ps shows root@server:/home/nohup# ps -eo pcpu,pid,user,args | sort -k 1 -r | head -5 %CPU PID USER COMMAND 122131 18695 mysql /usr/sbin/mysqld xxxxx ...
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CPU and RAM monitorization by parent id

I'm trying to monitor the CPU and RAM usage (in % of total for example) of a given process wich may spawn several processes. The parent process is /bin/rscw so I get its pid by ppid_bl=$(ps -ef | ...
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'ps' command hangs

A coworker ran into this issue twice and I don't know what's wrong. His ps command hangs, taking about 25% of the CPU. in_progress=1 sleep 10 while [ "$in_progress" -eq 1 ]; do ...