I tried that code. I set TIMEOUT to 7 and I replaced hanging_jobs with "sleep 3" and "sleep 100". The code works fine. I removed the evals and tried it again. Still works fine. While those eval's are harmless, I cannot see any reason to use them. The code
Code:
[ ! -d "/proc/$!" ] && ((count = TIMEOUT))
tests to see the the directory is missing. If so it sets count to TIMEOUT. This makes the loop stop.
Not all systems have a /proc filesystem. Maybe yours does not. This undermines to portability of that code. A more portable way to test if a process exists is to use "kill -0 $pid". This won't kill the process but it will fail the process is not there.
If anyone has any thoughts on why those eval's are useful I hope they post. They have me beat.
I am having a problem getting the PID of a process I start in the background is a csh.
In tcsh and sh it's simple
$! give it to you
But in csh this just returns
Variable syntax
From the man page it should work but it doesn't????
Any help. (2 Replies)
hi,
i hav a query abt reading the contents of /proc/pid/maps file.is there any system apis or functions available to get the data from dat file and parse according to my need. i need name of the .so,Create date of the .so file.,Location of .so file etc.
please provide a good source.
yes i hav... (3 Replies)
Hi,
I need to get the pid of a process and have to store the pid in a variable and i want to use this value(pid) of the variable for some process. Please can anyone tell me how to get the pid of a process and store it in a variable. please help me on this.
Thanks in advance,
Amudha (7 Replies)
Dear all,
I'm writing a KornShell script that calls inside it a function in background mode
#!/bin/ksh
function myfunction
{ . . .}
myfunction |&
. . .
How can I capture the PID of the function myfunction that runs in background?
Thanks in advance
:) (2 Replies)
Guys,
can you help me in killing the process which is running in back ground under for loop
I am not able to find the PID using ps -afx|grep <word in command I entered> (1 Reply)
Hello. I was wondering if someone can help me out with something. To simplify my life, I have written a tiny script to open an ssh tunnel through another linux host so that I can access the esxi hosts on that network using the client. For this I have to tunnel ports 443, 902, and 903. Here is what... (1 Reply)
Hey all,
Okay, this one is tricky and I'm not sure there is a niec way to do it, or indeed anyway to do it. The main issue revolves around timing out a hung ssh. I am doing this by creating a wrapper script for the ssh with the following requirements.
My requirements are:
Defineable... (5 Replies)
Hi guys,
i need to write a shell script that will close file descriptors from /proc/pid/fd
will calling exec 4<&- solve the problem ?
thanks in advance :) (15 Replies)
I think the libc.so is shared between processes, because it is a shared library and OS is engaged for saving memory.
But, below, the maps of bash, shows r-xp and r--p rw-p attributes to libc.so which mean private memory space.
Can anybody explain this for me?
:)cat /proc/$$/maps... (4 Replies)
Hello All,
I was looking into creating a script that would be used only to start a Daemon and create a lock file...
F.Y.I. It's for Nagios' NRPE Daemon Plugin...
Anyway when I run the command to start the Daemon (below):
/usr/local/nagios/bin/nrpe -c /usr/local/nagios/etc/nrpe.cfg -d
And... (14 Replies)
Discussion started by: mrm5102
14 Replies
LEARN ABOUT LINUX
timeout
TIMEOUT(1) User Commands TIMEOUT(1)NAME
timeout - run a command with a time limit
SYNOPSIS
timeout [OPTION] DURATION COMMAND [ARG]...
timeout [OPTION]
DESCRIPTION
Start COMMAND, and kill it if still running after DURATION.
Mandatory arguments to long options are mandatory for short options too.
-k, --kill-after=DURATION
also send a KILL signal if COMMAND is still running this long after the initial signal was sent.
-s, --signal=SIGNAL
specify the signal to be sent on timeout. SIGNAL may be a name like `HUP' or a number. See `kill -l` for a list of signals
--help
display this help and exit
--version
output version information and exit
DURATION is an integer with an optional suffix: `s' for seconds(the default), `m' for minutes, `h' for hours or `d' for days.
If the command times out, then exit with status 124. Otherwise, exit with the status of COMMAND. If no signal is specified, send the TERM
signal upon timeout. The TERM signal kills any process that does not block or catch that signal. For other processes, it may be necessary
to use the KILL (9) signal, since this signal cannot be caught.
AUTHOR
Written by Padraig Brady.
REPORTING BUGS
Report timeout bugs to bug-coreutils@gnu.org
GNU coreutils home page: <http://www.gnu.org/software/coreutils/>
General help using GNU software: <http://www.gnu.org/gethelp/>
Report timeout translation bugs to <http://translationproject.org/team/>
COPYRIGHT
Copyright (C) 2010 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.
SEE ALSO kill(1)
The full documentation for timeout is maintained as a Texinfo manual. If the info and timeout programs are properly installed at your
site, the command
info coreutils 'timeout invocation'
should give you access to the complete manual.
GNU coreutils 8.5 February 2011 TIMEOUT(1)
01-28-2011
