Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: Shell script runs fine in Solaris, in Linux hangs at wait command
Top Forums Shell Programming and Scripting Shell script runs fine in Solaris, in Linux hangs at wait command Post 302466867 by aksaravanan on Wednesday 27th of October 2010 02:34:43 PM
Old 10-27-2010
Shell script runs fine in Solaris, in Linux hangs at wait command
HI,

I have a strange problem. A shell script that runs fine on solaris. when i ported to linux, it started hanging.

here is the core of the script
Code:
CFG_FILE=tab25.cfg
sort -t "!" -k 2 ${CFG_FILE} | egrep -v "^#|^$" |  while IFS="!" read  a b c
do
#echo "jobs output"
#jobs
#echo "jobs -p  "
#jobs -p
# echo "Before entering parallel process  $$ "
#                jobs  -l
#if [[ `jobs | wc -l` -ne 0 ]] ; then
#               jobs|wc -l
#                ps -ef|grep "`jobs -p`"
#fi
 
wait
done

my CFG_FILE is
Code:
this_is_a_test_ttt! lask;djfl;a ljkasfl; as l;jsladfjasldfj aslk;fjas flj;asf fABCDEFGHIJ KLMNOP ABCDELKJ :LKJSDFLKJSDFKLJDFKDJF  DFKSDHFIUI JSF SIDFJISDFISJDIF  ! lkjasdflkjasf

repeated for 32 times.


if i uncomment the body of while loop , here is the output (that shows what for "wait" is waiting)
Code:
[2] +  Running                 <command unknown>
[1] -  Running                 <command unknown>
jobs -p  
28418

Before entering parallel process 28416
Code:
[2] + 28418      Running                 <command unknown>
       1 
myid   28418 28416  0 14:26 pts/31   00:00:00 egrep -v ^#|^$
myid   28421 28416  0 14:26 pts/31   00:00:00 ps -ef
myid   28422 28416  0 14:26 pts/31   00:00:00 grep 28421?28418

what causes this script wait for a while/grep command in linux whereas in solaris it is fine.

To give further details, i suppose to call a (8) background process, for each of line read from the file. So i introduced a wait command and when all complete i read next line and so on.
Since wait was really waiting for grep and not for spawned child, my script broke.

Othercases when it can run fine in linux

1. fewer lines in config file
2. in one test, i shrink one of row length from 260 to 250, it worked.

i can't predict a consitance condition for this behaviour.

Any help is appreciated in fixing / explaining this behaviour.

thanks
AK
Last edited by Scott; 10-27-2010 at 04:22 PM.. Reason: Please use code tags
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Script runs fine on UNIX Server...Not through MSK Tool kit on Windows Server

I have a .sh script which was running fine on all the UNIX Servers (AIX, SunSolaris). The script requires two mandatory parameters and many optional parameters. Now at a different client place who are on a Windows Server, when I try to execute the script through MKS Toolkit, there are couple of... (5 Replies)
Discussion started by: madhunk
5 Replies

2. Shell Programming and Scripting

Script runs fine, but not in a cron

Okay, I have the following script that runs fine from a command line as well as an executable .sh file. It just moves any file/folder with movie* in the name to a folder called _Movies. The issue I'm running into is when it's call from a cron. find /mnt/HD_a2/BT/complete -iname "movie.*" -exec... (4 Replies)
Discussion started by: sammyk
4 Replies

3. Shell Programming and Scripting

Script Runs fine but not giving any output

Hi, My script is running with no erros but not giving any output can anyonehelp. #!/bin/ksh . /home/application/bin/application.env OUTFILE=Result.txt PROD_PASSWORD=`${GET_PWD} -f ${PWD_FILE_PATH} -s ${PROD_SERVER} -u ${PROD_USER}` echo "1)To get the book last loaded details " read... (7 Replies)
Discussion started by: jagadish_gaddam
7 Replies

4. Shell Programming and Scripting

awk command in script gives error while same awk command at prompt runs fine: Why?

Hello all, Here is what my bash script does: sums number columns, saves the tot in new column, outputs if tot >= threshold val: > cat getnon0file.sh #!/bin/bash this="getnon0file.sh" USAGE=$this" InFile="xyz.38" Min="0.05" # awk '{sum=0; for(n=2; n<=NF; n++){sum+=$n};... (4 Replies)
Discussion started by: catalys
4 Replies

5. Shell Programming and Scripting

CRON shell script only runs correctly on command line

Hi, I'm new to these forums, and I'm hoping that someone can solve this problem... To make things short: I have DD-wrt set up on a router. I'm trying to run a script in CRON that fetches the daily password from my database using SSH. CRON is set like so(in web interface): * * * *... (4 Replies)
Discussion started by: louieaw
4 Replies

6. Shell Programming and Scripting

Script runs fine manually but not in crontab

Hello Guys, I have scratched my head alot on this but couldn't find clue what's wrong. Can you please help me with this? My problem is as following. 1) When I manually execute following script it runs successfully with below output. bash-3.00# more smssend #!/bin/bash echo -e "<Request... (16 Replies)
Discussion started by: umarsatti
16 Replies

7. Shell Programming and Scripting

Part of the Shell script is not running via crontab, runs fine manually

Hello Team, As a part of my job we have made a script to automate a service to restart frequently. Script having two functions when executing it's should find the existing service and kill it, then start the same service . Verified the script it's working fine when executing... (18 Replies)
Discussion started by: gowthamakanthan
18 Replies

8. Shell Programming and Scripting

Script runs in command-line fine but times out in CRON?

Hi, I have a script that seems to run to completion when in the command-line, but when it is run using the cron, it seems to time out. They both start and run fine, but on the CRON it stops prematurely. The script hits an API every few seconds and grabs data. Does anyone have any idea on... (4 Replies)
Discussion started by: phpchick
4 Replies

9. Shell Programming and Scripting

In Shell Script Does Second Command Wait For First Command To Complete

Hi All, I have a question related to Shell scripting. In my shell script, I have following two commands in sequence: sed 's/^/grep "^120" /g' $ORIGCHARGEDAMTLIST|sed "s;$;| cut -f$FIELD_NO1 -d '|' | awk '{ sum+=\$1} END {printf (\"%0.2f\\\n\", sum/100)}' >$TEMPFILE mv $TEMPFILE $ORIGFILE... (3 Replies)
Discussion started by: angshuman
3 Replies

10. Shell Programming and Scripting

Sql command inside shell script runs without giving anything back as outout

#!/bin/sh # This script returns the number of rows updated from a function echo "The execution is starting ....." sqlplus -silent $UP <<EOF set serveroutput on set echo off set pagesize 0 VAR no_rows_updated NUMBER; EXEC :no_rows_updated :=0; DECLARE CURSOR c_update is SELECT * FROM... (4 Replies)
Discussion started by: LoneRanger
4 Replies

LEARN ABOUT DEBIAN

condor_wait

condor_wait(1)						      General Commands Manual						    condor_wait(1)

Name
       condor_wait Wait - for jobs to finish

Synopsis
       condor_wait [-help -version]

       condor_wait[-debug] [-wait seconds] [-num number-of-jobs] log-file[job ID]

Description
       condor_waitwatches  a  user  log file (created with the logcommand within a submit description file) and returns when one or more jobs from
       the log have completed or aborted.

       Because condor_waitexpects to find at least one job submitted event in the log file, at least one job must have been successfully submitted
       with condor_submitbefore condor_waitis executed.

       condor_waitwill wait forever for jobs to finish, unless a shorter wait time is specified.

Options
       -help

	  Display usage information

       -version

	  Display version information

       -debug

	  Show extra debugging information.

       -wait seconds

	  Wait no more than the integer number of seconds. The default is unlimited time.

       -num number-of-jobs

	  Wait for the integer number-of-jobsjobs to end. The default is all jobs in the log file.

       log file

	  The name of the log file to watch for information about the job.

       job ID

	  A  specific job or set of jobs to watch. If the job IDis only the job ClassAd attribute  ClusterId , then condor_wait waits for all jobs
	  with the given  ClusterId . If the job IDis a pair of the job ClassAd attributes, given by  ClusterId . ProcId , then condor_wait  waits
	  for  the specific job with this job ID. If this option is not specified, all jobs that exist in the log file when condor_wait is invoked
	  will be watched.

General Remarks
       condor_waitis an inexpensive way to test or wait for the completion of a job or a whole cluster, if you are trying to get a process outside
       of Condor to synchronize with a job or set of jobs.

       It can also be used to wait for the completion of a limited subset of jobs, via the -numoption.

Examples
       condor_wait  logfile

       This command waits for all jobs that exist in  logfile to complete.

       condor_wait  logfile 40

       This command waits for all jobs that exist in  logfile with a job ClassAd attribute  ClusterId of 40 to complete.

       condor_wait  -num 2 logfile

       This command waits for any two jobs that exist in  logfile to complete.

       condor_wait  logfile 40.1

       This command waits for job 40.1 that exists in  logfile to complete.

       condor_wait  -wait 3600 logfile 40.1

       This waits for job 40.1 to complete by watching	logfile , but it will not wait more than one hour (3600 seconds).

Exit Status
       condor_waitexits  with  0  if and only if the specified job or jobs have completed or aborted. condor_waitreturns 1 if unrecoverable errors
       occur, such as a missing log file, if the job does not exist in the log file, or the user-specified waiting time has expired.

Author
       Condor Team, University of Wisconsin-Madison

Copyright
       Copyright (C) 1990-2012 Condor Team, Computer Sciences Department, University of  Wisconsin-Madison,  Madison,  WI.  All  Rights  Reserved.
       Licensed under the Apache License, Version 2.0.

       See the Condor Version 7.8.2 Manualor http://www.condorproject.org/licensefor additional notices. condor-admin@cs.wisc.edu

								  September 2012						    condor_wait(1)
All times are GMT -4. The time now is 10:33 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy