Continuing on my script to automatically copy some huge files across the network onto various servers as background jobs, I need to be able to check that each job has finished successfully.
The script below shows what I want - almost. The problem is that some processes may obviously finish sooner than others, even though they were started afterwards. But the way the script is written it will do the first one, and when that's completed check the second one (which may already be done).
What I need is a way of getting the wait and exit code parts to also run as background jobs so they will finish as soon as the process has - but I'll be darned if I can work out how that would be written. I'm sure it'll be simple, but my brain is fried!
Anyone got any ideas? Thanks in advance.
Code:
set -A processvar
countervar=1
while [[ $countervar -le 4 ]]
do
seconds=$(( (RANDOM%60+1) ))
echo $seconds
sleep $seconds &
processvar[$countervar]=$!
(( countervar=countervar+1 ))
done
countervar=1
while [[ $countervar -le 4 ]]
do
wait ${processvar[$countervar]} ; echo Exitstate = $?
(( countervar=countervar+1 ))
done
Hello all,
How do I start a background process and save the process id to a file on my system. For example %wait 5 & will execute and print the process id. I can't figure out how to get it to a file. I've tried: > filename 0>filename 1>filename.
Any assistance is most appreciated.
Thanks,
Jim... (10 Replies)
Hello,
This has probably been answered in other forms, however I would like to confirm this statement before I use it in production. Will this syntax work for a background process?
echo "nohup server_process1 >/dir1/nohup.server_process1 2>&1 &" | ksh
Please advise. Thanks (1 Reply)
Hi
When I run ./script.sh &
the script runs in bg
But when I close the telnet session, the script is killed also.
any idea how to keep this script running?
thx (4 Replies)
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)
Hello,
The scenario is as follows, I have a background process running initially for which i know the PID on machine1. I use ssh from machine 2 to execute a script in machine 1. For some reason the back ground process is terminated. I would like to know which process caused the ... (1 Reply)
Hello,
The scenario is as follows, I have a background process running initially for which i know the PID on machine1. I use ssh from machine 2 to execute a script in machine 1. For some reason the back ground process is terminated. I would like to know which process caused the... (6 Replies)
Hi,
I am using net::ftp for transferring files now i am trying in the same Linux server as a result ftp is very fast but if the server is other location (remote) then the file transferred will be time consuming.
So i want try putting FTP part as a background process. I am unaware how to do... (5 Replies)
Hi,
I have written a menu driven shell script in which as per the choice, I run the another script on background.
For eg:
1. get info
2)process info
3)modify info
All the operations have different scripts which i schedule in background using &.
However I wish to display the error... (0 Replies)
Discussion started by: ashima jain
0 Replies
LEARN ABOUT X11R4
queuedefs
queuedefs(4) File Formats queuedefs(4)NAME
queuedefs - queue description file for at, batch, and cron
SYNOPSIS
/etc/cron.d/queuedefs
DESCRIPTION
The queuedefs file describes the characteristics of the queues managed by cron(1M). Each non-comment line in this file describes one queue.
The format of the lines are as follows:
q.[njobj][nicen][nwaitw]
The fields in this line are:
q The name of the queue. a is the default queue for jobs started by at(1); b is the default queue for jobs started by batch (see
at(1)); c is the default queue for jobs run from a crontab(1) file.
njob The maximum number of jobs that can be run simultaneously in that queue; if more than njob jobs are ready to run, only the first
njob jobs will be run, and the others will be run as jobs that are currently running terminate. The default value is 100.
nice The nice(1) value to give to all jobs in that queue that are not run with a user ID of super-user. The default value is 2.
nwait The number of seconds to wait before rescheduling a job that was deferred because more than njob jobs were running in that job's
queue, or because the system-wide limit of jobs executing has been reached. The default value is 60.
Lines beginning with # are comments, and are ignored.
EXAMPLES
Example 1: A sample file.
#
#
a.4j1n
b.2j2n90w
This file specifies that the a queue, for at jobs, can have up to 4 jobs running simultaneously; those jobs will be run with a nice value
of 1. As no nwait value was given, if a job cannot be run because too many other jobs are running cron will wait 60 seconds before trying
again to run it.
The b queue, for batch(1) jobs, can have up to 2 jobs running simultaneously; those jobs will be run with a nice(1) value of 2. If a job
cannot be run because too many other jobs are running, cron(1M) will wait 90 seconds before trying again to run it. All other queues can
have up to 100 jobs running simultaneously; they will be run with a nice value of 2, and if a job cannot be run because too many other jobs
are running cron will wait 60 seconds before trying again to run it.
FILES
/etc/cron.d/queuedefs queue description file for at, batch, and cron.
SEE ALSO at(1), crontab(1), nice(1), cron(1M)SunOS 5.10 1 Mar 1994 queuedefs(4)
11-11-2010
