ps is a command for printing information about running processes

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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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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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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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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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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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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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Among “ps” command output fields, %CPU isn't the actual CPU usage of the process?

For example, one of the output fields of this BSD style command, ps aux, is "%CPU". The alternative command, ps -efl outputs the "C" (or CP) field. As per the ps man page: %CPU is the cpu ...
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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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“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 ...
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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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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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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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How to make sure the shell builtin echo is invoked so that its not visible in process list?

Is this going to be visible in the process listing if the below line is executed from a command line or a shell script bash -c "echo $password" or i just need to do echo $password from within ...
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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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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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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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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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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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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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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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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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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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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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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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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 ...
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How to watch pgrep?

When running a pgrep command with watch it does not only show the actual pgrep output, but also the watch process as well. Example: watch pgrep -lf donothing will show 3 processes, although ...
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receiving command as a parameter in bash

I have a following simple script called single-instance that executes the given command if there is no process under that command running. If I hard-code the command after the else statement, it has ...
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Bafflingly baroque Debian ps: show threads in forest tree

My favourite ps invocation is: ps -efww ef as I need to watch all processes (-e), get extended information about them (-f), see the environment (e) they operate within, wrapping lines (-w -w) so I ...
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Create tree of processes

I'm implementing pstree as an assignment, and I would like to create test tree of processes, but I'm struggling to do so. I tried to do something like this to create tree of background processes ...
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Inetd and Xinetd: which is running?

I'm studying for the first LPIC exam. In a quiz, I've found this question: How can you tell whether your system is using inetd or xinetd as a super server? And the right answer should be: ...
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ps shows my mkdir command with a space where I had a slash

I have a script that I ran which seemed to hang during a mkdir command. The command is of the form: mkdir -p /a/b/c/d However, in the ps results, I see: mkdir -p /a/b c/d What could cause this ...
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ps to show only processes that match more than one condition (AND)

According to the ps man page: Except as described below, process selection options are additive. The default selection is discarded, and then the selected processes are added to the set of ...
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Using “ps -C java -o pid,user,cmd” Can I reduce the output of cmd?

I am trying to get this command down to just the essential information that I need. In the command cmd comes back with this output... /usr/local/jre1.7.0_51/bin/java -Dwd.tag=boxect ...
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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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AIX why does ps display the process name between square brackets? [duplicate]

On AIX 7 I have a process whose name appears between square brackets in the ps output: PID TTY TIME CMD 7798784 pts/2 0:00 [myproc] 9044154 pts/2 0:00 ps 10485770 pts/2 0:00 ...
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PS tags does not work

I run a ps command inside a startup script, if I put in: ps -A -o euser,pid... I get this output: EUSER PID CMD %CPU RSS SZ ELAPSED root 644 ./code ...
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Please explain this output of ps -ef command?

A part of the output from the ps -ef command is given below : UID PID PPID C STIME TTY TIME CMD root 1 0 0 2012 ? 00:00:01 init [3] root 2 ...