Questions about identifying processes, about listing them, sending signals, killing them, assigning and using process priorities.

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“asking all remaining processes to terminate…” problem again with 14.04.1 LTS

I tried install ubuntu 14.04.1 LTS on my laptop. the installation process was a breeze. however, after rebooting at the prompt "reboot to use the system" when installation complete, it stuck at ...
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1answer
12 views

Creating a script involving the memory usage of processes

How can one create a bash script that displays the sum of memory usage for the processes which have PID<100?
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0answers
26 views

adding and deleting users problem

I have a problem with users this problem is that I can't add or delete them. When I try to add or delete them I have those logs: I searched it on the internet and I found that these problems are ...
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0answers
10 views

What is the difference between stopping, ending and killing a process? [duplicate]

As I always see the three options in system monitor, I thought I'd ask what the differences are. Even though there seems to be a clear gradation with how violent the commands are (end < stop < ...
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0answers
43 views

Process “/bin/sh -e /proc/self/fd/9” - what starts it and why?

I have a process /bin/sh -e /proc/self/fd/9 that runs on my system. sh -e /path/to/file in dash (which sh is symlinked to on my Kubuntu 14.10) just tests for existence of a file. In /proc/self/fs I ...
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27 views

Can't stop Apache

I just dump here the code: root@xxx-linux:/opt/lampp# ./lampp stopapache XAMPP: Stopping Apache...fail. apachectl returned 1. root@xxx-linux:/opt/lampp# It surely works, because it parses the ...
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1answer
21 views

How to see why a process call failed

From python i make several subprocess.Popen calls, and some of them are failing? How do I see what's happened to them and if they're still around or if there are orphan processes lying about? ps aux ...
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0answers
9 views

incron tab won't fire

I'm trying to get incrontab running, but it won't work. This is the error I get: access denied on ~/propt/apo/feeds - events will be discarded silently and this is the line in incrontab I want to ...
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1answer
26 views

program opening multiple processes

I am using Ubuntu 14.04 and am using KDE Dolphin as my file manager. It works just fine. I did however notice that it is now running in multiple processes. It is as if every time I go to a new ...
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0answers
32 views

What would cause a system freeze from navigation to /proc?

This is really driving me crazy, if I pull up nautilus and navigate to /proc, my system will completely freeze up. The only way to get out seems to be to SysReq RSEINUB, but sometimes even that ...
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1answer
178 views

Can't disable redshift

A few weeks ago I installed the redshift application using: sudo apt-get install redshift redshift-gtk I've faced a lot of bugs with it, including not being able to disable it. It finally got to ...
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0answers
28 views

How to limit CPU usage for a process BEFORE starting it?

I read a few ways to limit CPU usage for a process, but all of them work after the process has started. I am looking for a way to do it before the process starts. Any ideas? Sorry if has already been ...
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0answers
14 views

How to Terminate the Child process using ISR from parent process?

I wanted to create a C program to terminate a child process after specific time period (alarm()) using user defined ISR(Interrupt Service Routine) of parent process. How to do it?
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1answer
10 views

CPC Resources Checking

I am new to Ubuntu Linux, I want to check, how many applications are running and how many process, Executable files are running.
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1answer
60 views

java process hogs both cpu and net speed

Recently, I had noticed that my net speed had become slower. In the network statistics of System Monitor the correct speed was shown. I used tools like nethogs to investigate which process had so much ...
1
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1answer
13 views

PID created with system()

i'm new in ubuntu. I'm creating a programm with opens 2/4/8 new process in separate terminals. Using system(). How can i get PID of them, or change nice value, using another terminal?
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0answers
41 views

Why does f.lux uses 100% of a cpu core?

I installed f.lux on Ubuntu 14.04, The gui doesnt work properly but I am able to access settings through the xterminal. While looking in the system monitor, it can be seen that a process called ...
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0answers
36 views

WINE programs/processes isolation

I would like to completely isolate from each other two Windows programs running in WINE. I intend to block them from sharing memory, interprocess communication, files and using any possible ...
1
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1answer
36 views

Listing PID of sleeping processes

I've been reading about processes for a few hours now and I've got a question I'm not able to answer. How can I display the PID of sleeping processes and also determine and list their number ?
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1answer
21 views

System resources process questions

Is there a way you can find the percentage of CPU time used by a process on the command line? Also I want to find out what the cpu time is by a certain process as well as the percentage of memory ...
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0answers
23 views

Is there a easy way, for example through an advanced system monitor, to know what a process is

Some times, I'm curious about what a process is. Usually, I just type the name of the process into Google or Wikipedia. But that's really annoying. So is there an advanced system monitor or a plugin ...
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2answers
108 views

Is there something I can do from the terminal when a program freezes up and Ubuntu becomes unresponsive? [duplicate]

I was working normally and suddenly one program collapsed: it got unresponsive and its window went grey. After that it did appear this message asking what to do: close the program or wait for it to ...
0
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1answer
15 views

Maximum port range for Ubuntu

How many ports(as a application process) can be assigned on Ubuntu? How to set an application to a specific port. For example setting up bit-torrent on 3444.
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2answers
92 views

Does Zombie process cause memory shortage? Does it killed by init process eventually?

I have zombie process problem and it's a first time I've met it. So I don't know how to solve this problem and concept. I read some article posed 1 year ago (link) and It said like below: There is ...
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0answers
17 views

lldb-3.3 failed to launch on Ubuntu 12.04

I am trying to use lldb on ubuntu 12.04 because I am more familiar with it than gdb. However, it fails with uninformative messages every time. I installed it though the official repository sudo ...
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2answers
45 views

How to identify this process [duplicate]

In the background, there is a process taking up a lot of processing power. Htop says it's using a whole core. (Of my quad core) It's strange because I have no windows open. How do I identify the ...
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1answer
53 views

How can I make an executable to run different processes?

I am running PDFXCview.exe (for pdfxchange viewer portable version) under wine to open a pdf file, by PDFXCview.exe 1.pdf When I do the same for another file, the other file will be opened by the ...
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2answers
748 views

How to stop mysqld process?

result of ps -e | grep mysqld running htop and clicking on memory usage.. It is taking 33% of 4gb memory. I just want to end the mysqld process.. running sudo pkill mysqld ends the process but ...
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1answer
28 views

Stat a PID for claim time?

Is it possible to stat a process ID to get the time it was claimed?
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0answers
5 views

'Help/F1' processes continuously being created

I am new on Ubuntu, so I don't know if this question was already answered. At least I didn't find nothing closer to what's happening on my computer! Basically, when I open an application (i.e. ...
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2answers
192 views

How to open program from process id?

Is there any way to open program which is running in background. I've developed an application in java for ubuntu and want to open that application through its pid if it is already being running just ...
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2answers
408 views

PID's associated with Chromium multiple tabs and windows?

While reading about Linux, I got a $netstat -tulpn to find out which process is listening Upon a port. I got: anupam@JAZZ:~$ sudo netstat -tulpn [sudo] password for anupam: Active Internet ...
2
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1answer
1k views

ap-hotspot error “Another process is already running”

ap-hotspot is configured, when i first entered the command sudo ap-hotspot it said starting wireless hotspot which took long time but didn't start. Afterwards it displays following errors:
2
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1answer
62 views

How to exit gpick color picker after picking from a keyboard shortcut?

I assigned a shortcut in Ubuntu 14.04 to gpick -p, which brings up the color picker instantly. GPick is configured to save the picked color to the clipboard. However, once the color is picked, the ...
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1answer
9k views

TOP showing a bunch of rcuos processes

i ran TOP and im showing a ton of these rcuos processes below. What are these? top - 21:41:15 up 22 days, 19:20, 1 user, load average: 0.00, 0.01, 0.05 Tasks: 332 total, 1 running, 331 sleeping, ...
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0answers
15 views

Get notified on process close

We have a driver which keeps some objects on a per process basis. These objects need to be cleaned and freed when those processes close. Is there a way to get notified (in a kernel driver) of those ...
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1answer
85 views

How to make one process to zombie

The question is the title, With one example please show how to make one of the process zombie between all process ?
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1answer
42 views

My IDE keeps crashing instantly: How do I diagnose?

I am using Aptana, Java-based IDE. Starting today, it is crashing suddenly every few minutes. This may have to do with the fact that I recently upgraded to Xubuntu 14.04. There is no error message. ...
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1answer
304 views

The kernel use which scheduling algorithm?

I know there are a lot of scheduling algorithm for processor. like FCFS ( first come first served ) Or SJF (short job first) and so on. How to know the kernel using which algorithm ?
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4answers
565 views

Find children of the process

is there any way to know, who are children of the specific process ? for example those children which their parent ID is foo ?
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1answer
21 views

Can Magic SysRq be used to switch workstations or kill specific processes?

My PC, running Ubuntu from a live CD, is frozen. I think it's because I have too many Firefox tabs open, which is overloading my memory. Is there anyway to use Magic SysRq to only kill Firefox? Or to ...
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1answer
61 views

How to find and star/stop or hide/display indicators?

I am using Ubutnu 14.04 (LTS) and have following indicators: Now from above indicators (like: Bluetooth, Classic-Menu, Indicator-synapse, Network, Laungage, Message, Sound , datetime or calendar and ...
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2answers
172 views

Getting List of Running processes and applications

How can I see which application and what processes are running recently after the login using terminal command.
0
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1answer
17 views

How to take/release control of output?

I have two parallel processes running shell script, each will print to stdout from time to time using echo. But sometimes the output may mixed up. Is there a way to take exclusive use of stdout, then ...
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2answers
2k views

Problem with ap-hotspot

This is the message displayed in my terminal screen when I typed sudo ap-hotspot start Another process is already running Which process is running and how do I stop it?
0
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2answers
61 views

System processes

How can I see the system processes (only) running on my computer?I have tried ps,ps -e etc but always I get the user process + system processes.(I have kept firefox open,I am also getting it.Though ...
2
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1answer
85 views

Is there any reason to use 'kill' instead of 'killall'/'pkill'?

Starting my adventure with Linux a couple of years back, most tutorials and older, more experienced colleagues suggested using the command 'kill', sort of like a replacement for the Process Manager ...
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0answers
12 views

Accessing a process after closing the consol

Basically I am using Ubuntu to run a minecraft server via a VPS and I’m using putty to control it. once I have started my server and everything is running, I’m in control of the server console, just ...
27
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5answers
2k views

Access to the terminal while you are on Vim

Is there a way to access the terminal while using Vim? I do not like to open another terminal or save and exit the current terminal.
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2answers
146 views

CGroups memory subsystem

I want to know if I can set dynamic limits to the memory subsystem in a cgroup. Currently I have the OOM disabled and a dummy process to test the control group, when the limit in memory is reached, ...