PID (Process IDentifier) is the number that identifies a process running on a operational system.

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Kill all tasks with PID above a certain integer with bash

How may I fetch and kill all processes with a PID above e.g 1000? Using commands like ps -A and top is fine for viewing the list of processes, but how would one only get the PIDs? The logic of ...
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21 views

How do I figure out a root cause of a zombie process?

A process on a production linux server became a zombie with unknown reason. I wonder if there is a certain methodology to find out what causes it.
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19 views

Why is the highest PID 66435 when there are only 277 processes running? [duplicate]

On my OS X/Darwin system, the highest PID is 66435, but there are only 277 processes running. Doesn't this indicate the system is just counting up with PIDs? And, if so, doesn't that mean the system ...
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36 views

bash: monitoring which files are used by a process in real time

Is there any command to track what files are opened / closed / written by program with given PID in real time? I want to: run a program, enable program file operations monitoring, do some stuff in ...
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10 views

Is it possible to see a snapshot of all the memory allocations made by a particular process in Linux?

The important data I want about these allocations is the function pointer value which did these mallocs. Otherwise I know of pmap and /proc/[pid]/maps. Both these techniques lack the function pointers ...
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1answer
48 views

How do I determine the PID of my python program if there is more then one python program running?

I have two python programs running on my system, say they are called program x and program y. I want to get the pid of program y, but not x for my bash script. When using pgrep python, I get the pid ...
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1answer
328 views

Restart process on linux by its pidn number with kill command, how?

Well, I want to be able to restart processes on linux and so I looked into kill manpages for that. Apparently kill -l would list all the signals I could send to a process to do what I need, which ...
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5answers
434 views

How to find process pid of an application

I have portable version of an app. I have ran for example 5 multiple instances of it and they all have the same process name but different pids. I want to find a way to for example kill one specific ...
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13 views

How not to kill a wrong process from my script?

In Debian Linux I use the following scripts for alarm clock (called by at command). ~/bin/awake: #! /bin/bash set -m ~/bin/killawake PID=$BASHPID echo $PID > ~/tmp/wakeupalarm.pid while true; do ...
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1answer
80 views

How to find out who (what process) is starting another process?

So no matter how many times I kill exim4 it immediately comes back to life. I have stopped the service and everything but something is bringing it back to life and using it for spamming. How do I ...
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1answer
35 views

PID of background task is different to the listed task PID using ps

Note: I h ave moved this to stack-overflow, I think that is the right place: here I have a strange issue, I can't quite get my head around. What I do is run a function called fn_rundumper which ...
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48 views

Process ID files missing from remote Ubuntu Linux PC?

I am running Ubuntu 12.0.4 LTS on a PC in my office and on a virtual machine hosted on Azure. For some reason, the remote PC is not creating a PID file for each process. Everything else seems to ...
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18 views

finding out when some file is released by the process, Windows

I was reading about of know what process (or PID) in Windows is using some file with Handle or Process Explorer. My doubt is when?, not who? I want to know when the file is released, and I can ...
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2answers
40 views

How to view the calling script on Linux [closed]

I am trying to write a script to help with computer security. I am trying to look for open ports, find the PID, and find what called it. I have it working, where my output looks something like this: ...
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164 views

How Windows/Linux assign PID to processes?

Q1 : I want to know how Windows/Linux assign a PID to a process when that process began? Is it a delimited random number? or it is fixed for a file on a compute? does it have a special algorithm? and ...
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1answer
135 views

Shell, subshell, source, background process, PID == confusion

I am trying to get my mind straight as to how all these things are put together. For example with this script: #!/bin/bash . script1 ./script2 . script3 & ./script4 & sleep 5 How do the ...
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1answer
770 views

PID not shown under Services in the Task Manager on Windows 8

I'm trying to run a program that defaults to port 9000 but there is an unknown source using that port. I found the PID by using, netstat -aon | more and went to the task managers service tab ...
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1answer
279 views

Init process in linux

Who or Which process is the parent of INIT process? INIT is the first process which is initialized by the Kernel, kernel is not one process, So what is its parent process id value?
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88 views

Getting pid of process not listed in ps -ef

I know there is a process called blt.pl running on a particular machine but not quite sure which user is running it. i have tried ps -ef | grep -i blt.pl but obviously it's not finding it. Is there ...
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1answer
578 views

The server quit without updating PID file

I am trying to install MySQL on my Mac w/ Mavericks OS. Whenever I try sudo /usr/local/mysql/support-files/mysql.server start it shows an error The server quit without updating PID file ...
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1answer
89 views

How to execute a script 20 at a time with different variables at a time in parallel?

I am trying to run 20 files at a time, using warc.sh or a better way to put it is 20 instances of warc.sh at a time with directory contents as the input. I am also trying to watch the PIDs in case bad ...
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1answer
531 views

Weird start-stop-daemon behaviour?

I have the following script: #!/usr/bin/python3 import sys for s in sys.argv: print(s) Now I execute: sudo start-stop-daemon --start --pidfile /var/run/test.pid --make-pidfile ...
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Does Windows 7 reuse process IDs?

Does Windows 7 reuse process IDs? The reason I ask this question is due to my experience that Windows XP and Linux never seems to generate process IDs higher than 20–30k. However, my Windows 7 ...
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Squid Proxy process not running

Hey community, some days ago my squid crashed. I'm running squid 2.6 STABLE21 on CentOS. The output of the "show squid status" command is just squid dead but pid file exists starting the ...
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4answers
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If I know the PID number of a process, how can I get its name?

If I have the PID number for a process (on a UNIX machine), how can I find out the name of its associated process? What do I have to do?
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1answer
956 views

How to start a process with a predefined (in case it is unused) PID?

Is it possible to start/run a process with a predefined PID? In Linux or in OS X (or BSD)?
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1answer
186 views

Red5 on Debian, output PID

I'm fumbling my way through with this one, as a novice with all things linux so please be patient :) I would like to output the process ID of a program to a file. From my readings this is generally ...
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9k views

Run a process and return its PID (as CHP.EXE) for a batch file

I'm looking for something like chp.exe, it can runs a command and returns its pid. I can not use CHP.EXE because it seems to be reported as infected file in some antiviruses. Thanks
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Is there a process with pid 0 linux? [duplicate]

Is there a process with pid 0 linux? Also is there any negative pids? This is just out of curiosity :D
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1answer
1k views

What processes, if any, exist between PIDs 0 and 4 on Windows 7?

Just out of curiosity what are the processes between 0 and 4, and also between 4 and 200 something.
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1answer
387 views

hide pid when a process is launched in background

So I put this command vncconfig -iconic &, this causes vncconfig window to launch and terminal will display like [1] 13488. I want to hide this pid info. That is, when we put the command, only ...
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134 views

Install perl module from rpm file

I have a perl issue and obviously I'm not a perl expert. I can not use CPAN. I've installed File::Pid using a rpm, or I tried. I downloaded perl-File-Pid-1.01-3.el5.noarch.rpm (and the ...
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786 views

Interfacing strace with Process Name instead of PID

How do I implement a wrapper script pstrace in bash that changes the interface of [sudo] strace -c -p [PID] to [sudo] pstrace -c -p [PROCESS-NAME] similar to how killall [PROCESS-NAME] is ...
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How to find PID's user name in linux

Can you help me to find the PID's user name, Some time my server got high load. When i top -c, I cannot even find the PID's user name who / which is causing load on the server.
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1answer
359 views

Determine display or VNC session based on PID

I frequently VNC into a server where we run many concurrent computationally intensive matlab processes. Sometimes, one of my processes misbehave, which I can see from top, but I have a hard time ...
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Is a process PID guaranteed to stay the same as long as the process doesn't die?

I'm doing some simulation work with Linux, and the code I'm working on right now only works under the assumption that, once a process has been assigned a PID by the kernel, that PID will remain the ...
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1answer
4k views

Linux - alternative places where to store pid file instead of /var/run

As written in the title, where should I let the init script write the pid file? are there any standard paths I should choose instead of the /var/run ? Could /tmp be a good place where to store it or ...
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5answers
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How to get the pid of a running process using a single command that parse the output of ps?

I am looking for a single line that does return the pid of a running process. Currently I have: ps -A -o pid,cmd|grep xxx|head -n 1 And this returns the fist pid, command. I need only the first ...
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3k views

Get PID of process started in screen by su

i have a simple script that starts quassel-core in a screen session as different user! The script is: #!/bin/sh su ircc -c 'screen -dmS quassel /home/ircc/quassel/quassel-core' I want to start and ...
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5answers
16k views

Excluding grep from process list

I have cobbled together a command to return the process ID of a running daemon: ps aux | grep daemon_name | awk "{ print \$2 }" It works perfectly and returns the PID, but it also returns a second ...
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1answer
4k views

Where can I find my (current shell process') PID?

I'm on OS X using ZSH (have lots of homebrew stuff, too). I'd like to know the PID of my current terminal. (I'm learning more about process management on *nix systems, pstree and the like, and so ...
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1answer
1k views

How do I locate the PID code for an ASUS laptop webcam?

I can't look in the Device Manager for the PID code because the camera has disappeared from the device list. The driver still shows up in programs list, but the camera doesn't work. Where else can I ...
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1k views

Show PID of process just launched in ZSH

Can I show the PID of a process that I just launched, ideally at the end of the line of the command? Example: root in ~: mysqld .................. [PID 34567] 12121 mysql-logs start to come in... ...
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1answer
282 views

Reattaching to screen - Linux

We run several screen instances from one box, eg. : 27185.pts-53.CentOS-57-64-minimal (Detached) 27209.pts-53.CentOS-57-64-minimal (Detached) 27281.pts-53.CentOS-57-64-minimal ...
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2k views

How can I stop jenkins.pid in fedora15?

I have jenkins running, but I need to stop it. in /var/run I have jenkins.pid which is what the standard jenkins script uses to stop jenkins. The jenkins script uses start-stop-daemon which doesn't ...
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4answers
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PID:4 using Port 80

I was trying to install Zend Server CE on my computer but when I got to the point were I need to choose the port for my Web Server it says: "Web Server Port: 80 Occupied". So I decided to check what ...
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Routing packets to different available networks using process' pid / uid

I need to route packets from some processes(unique pids/uids) to desired network connection. So, Suppose we have 4 processes with pids 10, 11, 12, 13 respectively; and we have two network connections ...
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1answer
1k views

Windows analog of $1 (PID of the last started process)

How to get on Windows PID of the last started process using WScript.Shell or similar? I know how to start a process and get its PID: Set oExec = WshShell.Exec( program ) Set pid = oExec.ProcessID ...
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4answers
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How to kill one tab of google chrome using pid

I want to close one tab of chrome. I tried killing the pid of the tab, but the tab doesn't close instead says "Aw, Snap! Something went wrong while displaying this webpage. To continue, reload or go ...
3
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1answer
6k views

Blink/Flash Text -Shell Script

I have a bash script where I'm zipping some files. This process sometimes takes time depending on the file sizes. I want to get the pid of this command and display a flashing message "Zipping..." ...