10-02-2011
Quote:
Originally Posted by
alister
What are you trying to accomplish or prevent?
I'm writting programm to test students programms (user sends source code via web, server compiles it, run it with some tests). I'm trying to prevent unkillable programms when user's programm forks a lot of times (forks will be limited by OS, but user limit of processes > 1), theoreticaly programm can fork in "bad moment" and can be unkillable. Starting pkill lots of time - it is not a beautiful solution (i can write kernel patch to deny fork() - it guarantees that all processes will be killed), i'm trying to find "beautiful" solution without patching kernel and it will be better if it will be cross-platform solution. Running pkill multiple times - practicaly normal solution, but for me it looks like Achilles' heel.
10 More Discussions You Might Find Interesting
1. UNIX for Advanced & Expert Users
Hi All,
I am unable to kill a process using kill command. I am using HP-UX system. I have tried with kill -9 and i have root privilages.
How can i terminate this daemon ? ? ?
Regards,
Vijay Hegde (3 Replies)
Discussion started by: VijayHegde
3 Replies
2. Shell Programming and Scripting
how to start a process and make it sleep for 5 mins and then kill that process (6 Replies)
Discussion started by: shrao
6 Replies
3. Programming
Hi all
i have simple c program , when i wish to kill the app
im using kill(0,-9) , but it seams this command don't do any thing and the program.
just ignore it .
what im doing wrong here ?
im using HP-UX ia64
Thanks (9 Replies)
Discussion started by: umen
9 Replies
4. UNIX for Dummies Questions & Answers
Hi,
out of curosity this question just popped in my mind. Is there any way to find out the uid and gid of the running process ?
If i do a ls -l of a program then it shows the uid/gid bit (if its set). I want to see as which user/group the program is running ..... is there any way to know this... (2 Replies)
Discussion started by: ankurjain
2 Replies
5. Shell Programming and Scripting
Sorry, posted the question in other forum. (0 Replies)
Discussion started by: sudhamacs
0 Replies
6. Linux
I want to Kill a process without using kill command as i don't have privileges to kill the process. I know the pid and i am using Linux 2.6.9 OS. (6 Replies)
Discussion started by: sudhamacs
6 Replies
7. Shell Programming and Scripting
Hi Experts, we do have a shell script for Unix Solaris, which will kill all the process manullay, it used to work in my previous env, but now it is throwing this error.. could some one please help me to resolve it
This is how we execute the script (and this is the requirement) ... (2 Replies)
Discussion started by: jonnyvic
2 Replies
8. Shell Programming and Scripting
Hi
I want to write a shell script which can find the process id's of all the process and kill them eg:
ps ax | grep rv_
3015 ? S 0:00 /home/vivek/Desktop/rv_server
3020 ? S 0:00 /home/vivek/Desktop/rv_gps
3022 ? S 0:00 /home/vivek/Desktop/rv_show
... (7 Replies)
Discussion started by: vivek_naragund
7 Replies
9. UNIX for Dummies Questions & Answers
What I need to learn is how to use a script that launches background processes, and then kills those processes as needed.
The script successfully launches the script. But how do I check to see if the job exists before I kill it?
I know my problem is mostly failure to understand parameter... (4 Replies)
Discussion started by: holocene
4 Replies
10. Shell Programming and Scripting
Good afternoon
I need to KILL a process in a single command sentence, for example:
kill -9 `ps -aef | grep 'CAL255.4ge' | grep -v grep | awk '{print $2}'`
That sentence Kills the process ID corresponding to the program CAL255.4ge.
However it is possible that the same program... (6 Replies)
Discussion started by: enriquegm82
6 Replies
PKILL(1) BSD General Commands Manual PKILL(1)
NAME
pkill -- find or signal processes by name
SYNOPSIS
pgrep [-filnvx] [-d delim] [-G gid] [-g pgrp] [-P ppid] [-s sid] [-t tty] [-U uid] [-u euid] pattern ...
pkill [-signal] [-filnvx] [-G gid] [-g pgrp] [-P ppid] [-s sid] [-t tty] [-U uid] [-u euid] pattern ...
prenice [-l] priority pattern ...
DESCRIPTION
The pgrep command searches the process table on the running system and prints the process IDs of all processes that match the criteria given
on the command line.
The pkill command searches the process table on the running system and signals all processes that match the criteria given on the command
line.
The prenice command searches the process table on the running system and sets the priority of all processes that match the criteria given on
the command line.
The following options are available for pkill and pgrep:
-d delim Specify a delimiter to be printed between each process ID. The default is a newline. This option can only be used with the pgrep
command.
-f Match against full argument lists. The default is to match against process names.
-G gid Restrict matches to processes with a real group ID in the comma-separated list gid.
-g pgrp Restrict matches to processes with a process group ID in the comma-separated list pgrp. The value zero is taken to mean the
process group ID of the running pgrep or pkill command.
-i Ignore case distinctions in both the process table and the supplied pattern.
-l Long output. Print the process name in addition to the process ID for each matching process. If used in conjunction with -f,
print the process ID and the full argument list for each matching process.
-n Match only the most recently created process, if any.
-P ppid Restrict matches to processes with a parent process ID in the comma-separated list ppid.
-s sid Restrict matches to processes with a session ID in the comma-separated list sid. The value zero is taken to mean the session ID of
the running pgrep or pkill command.
-t tty Restrict matches to processes associated with a terminal in the comma-separated list tty. Terminal names may be specified as a
fully qualified path, in the form 'ttyXX', or 'pts/N', (where XX is any pair of letters, and N is a number), or the shortened forms
'XX' or 'N'. A single dash ('-') matches processes not associated with a terminal.
-U uid Restrict matches to processes with a real user ID in the comma-separated list uid.
-u euid Restrict matches to processes with an effective user ID in the comma-separated list euid.
-v Reverse the sense of the matching; display processes that do not match the given criteria.
-x Require an exact match of the process name, or argument list if -f is given. The default is to match any substring.
-signal A non-negative decimal number or symbolic signal name specifying the signal to be sent instead of the default TERM. This option is
valid only when given as the first argument to pkill.
The -l flag is also availale for prenice.
Note that a running pgrep or pkill process will never consider itself or system processes (kernel threads) as a potential match.
EXIT STATUS
pgrep, pkill, and prenice return one of the following values upon exit:
0 One or more processes were matched.
1 No processes were matched.
2 Invalid options were specified on the command line.
3 An internal error occurred.
SEE ALSO
grep(1), kill(1), ps(1), kill(2), sigaction(2), re_format(7), signal(7), renice(8)
HISTORY
pkill and pgrep first appeared in NetBSD 1.6. They are modelled after utilities of the same name that appeared in Sun Solaris 7.
prenice was introduced in NetBSD 6.0.
BSD
December 7, 2010 BSD