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

learn more… | top users | synonyms

107
votes
7answers
187k views

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?
46
votes
9answers
91k views

How to get parent PID of a given process in GNU/Linux from command line?

Resolved before asked: cat /proc/1111/status | grep PPid
31
votes
4answers
111k views

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 ...
22
votes
5answers
21k 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 ...
21
votes
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.
15
votes
2answers
3k views

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 ...
14
votes
6answers
30k views

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 ...
13
votes
2answers
5k 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 ...
13
votes
5answers
27k views

PID number in Task Manager can't be found

i tried running netstat -o to check what are the connections which are established. I saw two and they have PID numbers. When I checked it in my Task Manager, I couldn't find those PID numbers. Is ...
12
votes
3answers
1k views

How to identify terminated Windows process if I still have its PID?

Background: In the middle of my work, license agreement for installing "Microsoft Mouse and Keyboard Center" suddenly appeared. I'd like to understand what process launched the setup, but using ...
10
votes
4answers
10k views

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 ...
5
votes
3answers
2k views

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 ...
5
votes
3answers
2k views

Where does the command “top” get its information from in linux?

Which files does the linux command "top" read from in order to build its table of data? Specifically, I'd like to be able to find the data for the "command" column based off of a PID.
4
votes
3answers
13k 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
4
votes
2answers
2k 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... ...
4
votes
1answer
6k views

After forced quit, “killall Finder” says “No matching processes…” but PID still exists?

Here's one for ya. Upon a forced quit of the Finder with unsuccessful relaunch, "killall Finder" in terminal returns: "No matching processes belonging to you were found" Oddly enough, the PID for ...
3
votes
1answer
6k 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 ...
3
votes
1answer
7k 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..." ...
3
votes
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 ...
3
votes
2answers
54 views

Windows 7 - missing PID in services tab, task manager

So, as stated in the title, PID tab is missing from services tab in task manager. I need PID in order to find a windows service, which causes lots of hard page faults in my system. Any way to fix that?...
2
votes
4answers
2k views

Loop: Start program and kill after time out

for debugging reasons I want to spot one of those bugs showing up just occasionally. Therefore I want to code a while loop in the shell starting the program (if it will segfault => that's what I ...
2
votes
5answers
2k 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 ...
2
votes
1answer
190 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 ...
2
votes
1answer
427 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 ...
2
votes
2answers
1k 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 ...
2
votes
0answers
150 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 perl-Class-...
2
votes
0answers
370 views

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 ...
1
vote
5answers
4k 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 ...
1
vote
3answers
8k views

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.
1
vote
1answer
319 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 (Detached)...
1
vote
2answers
91 views

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 ...
1
vote
1answer
53 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 ...
1
vote
1answer
1k 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)?
1
vote
1answer
208 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 ...
1
vote
1answer
2k 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 ...
1
vote
1answer
52 views

why is PID 0 reading/writing large amounts of data

Just booted my PC up and it was running slower than usual. I went into the resource monitor and its saying that System PID 0 is reading and writing 100,000,000B/sec and its accessing all drives for 50%...
1
vote
1answer
350 views

Windows 7 PID consumes 50% CPU almost everyday for hours

I'm trying to determine why these services consume 50% of my CPU for hours at a time each day. I cannot restart the services without error and killing the PID just restarts it in a few minutes and it'...
1
vote
1answer
4k 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 are:...
1
vote
1answer
242 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 ...
1
vote
1answer
587 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?
1
vote
1answer
147 views

How to identify the process which has loaded a certain file

I have certain file in the disk which I am unable to delete, as it mentions that it's being used by a certain process. How do I identify the process which is using this file?
1
vote
0answers
13 views

Init script changes for MongoDB

We have MongoDB(version 3.0) in production in standalone as well as in cluster mode. Currently we were facing issue saying "unclean shutdown detected hence unable to start mongod". 1. After debugging ...
1
vote
2answers
176 views

Open file in Notepad++ as a tab without closing launched process

Some old tools are designed to work with an external text editor. I am stuck using a legacy tool that does this in the following way: Create a temporary file with the content to be edited. Launch ...
1
vote
1answer
741 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 (/usr/local/...
1
vote
1answer
651 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 /var/run/test....
0
votes
2answers
166 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 ...
0
votes
3answers
913 views

How can I check the PID of a X-server in another virtual terminal?

I am trying to open a program in a naked X-server on a different virtual terminal. I am using ubuntu 9.10. The command I'm using is this. openvt -f -s -- `X :2 & '/path/to/program' -display :2`; ...
0
votes
1answer
465 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 ...
0
votes
2answers
46 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: ...
0
votes
1answer
513 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 ...