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

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23 views

Why is my non-system HDD cannot spin down?

My non-system (/media) HDD unfortunatly wakes up from sleep after around 1-2 min. I tried to investigate which process could request an access to hdd while sleep with the help of thes thread: ...
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24 views

How do you terminate the process “Mitmproxy”

I have recently been messing around with mitm proxy as it interests me. And this is a simple question that I couldnt find an answer for. How exactly do you terminate the mitmproxy? I tried sudo ...
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1answer
123 views

Is sudo killall -u lightdm safe?

I realized that my server has many processes runned by lightdm: Can i killall processes from lightdm? Is sudo killall -u lightdm safe?
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1answer
44 views

Ubuntu is very slow in my Laptop Asus N51VN

My laptop has a 4G ram and 500G hard with the Intel core 2 duo but Ubuntu is very very slow in my laptop I try Ubuntu studio Ubuntu 14.04 Ubuntu 14.10 Ubuntu 15.04 instead Windows operation work ...
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1answer
32 views

Process [#] terminated with status [#]

What is "process [number in parentheses] terminated with status 1"? or "with status 99"? I forget exactly where it appeared. Probably in a crash report.
2
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1answer
59 views

Can there be two init processes?

I am new to Operating Systems (specifically Linux) and this is my first question here I want to ask, can there be two process with CMD = init (as given by ps - e command). I had two processes on my ...
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1answer
27 views

High uptake of memory in the nano process (root)

In Ubuntu server 14.04 have a high consumption in the process called nano (root), which is consuming too much memory RAM. Why this happens? And as I controlled?, i have a server with 5 gb in ram and ...
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1answer
24 views

Switch tasks on active process to new process

What I'm going to explain is really about nginx processes, so maybe it can be done in nginx, or maybe its a Linux feature. In anyway, I hope it's possible. I have an ningx process running, that looks ...
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2answers
87 views

Wait for PID - shown in ps

I am using the command below in a script to wait for a PID and then do something when that process finishes: while ps -p [pid] > /dev/null; do sleep 1; done; [cmd] where [pid] is the PID of the ...
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1answer
37 views

Automatically restart a crashed software [duplicate]

I am using "Docky" and it is a software prone to crashes once in a while. Is there a way to keep this software always running even after a crash? I want "Docky" to restart itself if it crashes so i ...
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3answers
59 views

Can I somehow pause all processes of an user logged in in background?

I have mainly two accounts on my 14.10 laptop: Mine (admin) and my brother's (restricted). Now when my brother is logged in and runs some applications like firefox with flash player, it consumes ...
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0answers
36 views

What in install.sh in Kubuntu 14.04?

My laptop fan is sometimes loud when running Kubuntu 14.04, I guess it is because of one process taking 12-13% of CPU memory. I am new with KDE/Kubuntu. What is that? Should it be running like ...
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0answers
6 views

Screen turn off during Restore

I just reinstalled my ubuntu 12.04 and during the back-up restore my screen just turned off but my computer is still working. The hard drive's light is off. I guess its no longer in use. It's has been ...
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0answers
23 views

strange process of making a slow network

whether this process, making the connection to be slow. how to eliminate it permanently, I have used comment kill -s 9 [PID]. but reappears help me please. tks PID USER PR NI VIRT RES SHR ...
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1answer
30 views

how to list all processes as sorted names

As far as I know, ps -ewill list all processes in ubuntu. But the results are sorted based on pid. I want the results are based on sorted names. What command should I use ?
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1answer
24 views

See processes which use device

I have this (hopefully) irrational fear someone might hijack my webcam, especially since some of my colleagues started to put some tape around theirs. For some reason I am sometimes not able to ...
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0answers
80 views

“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
23 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
43 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
121 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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0answers
65 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
25 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
36 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 ...
0
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1answer
40 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
44 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 ...
1
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1answer
312 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
38 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
17 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
12 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
106 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
15 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
104 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
59 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 ...
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1answer
50 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
24 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
25 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
131 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
129 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
32 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
50 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 ...
1
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1answer
63 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
2k 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
29 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
6 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
264 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 ...
3
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2answers
495 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 ...
4
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1answer
2k 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
85 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 ...