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Full Discussion: Running jobs in parallel
Top Forums Shell Programming and Scripting Running jobs in parallel Post 302511470 by Chubler_XL on Wednesday 6th of April 2011 11:03:50 PM
Old 04-07-2011
The below code is still returning zero when you have 6 processes running
Code:
ps -ef|grep "sqlplus -s"|grep -v grep|wc -l

You can see that the number of jobs goes to [6] in the output, you then get the error about cnt=0 and then in jumps to [12].

My code was doing the correct thing to start with. It started 6 jobs and was was waiting for one of them to finish. You did ps -ef | grep "sqlplus -s" and didn't see anything so you assumed no jobs were started. The issue was that the processes aren't being picked up by the grep search.

As I suggested before start a job and then do ps -fp <pid> to find out what the command line is, this will help debug why grep "sqlplus -s" is not matching it.


The test on numeric value should have || this is "or" in shell not "pipe".
 

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LEARN ABOUT HPUX

zgrep

ZGREP(1)						      General Commands Manual							  ZGREP(1)

NAME

       zgrep - search possibly compressed files for a regular expression

SYNOPSIS

       zgrep [ grep_options ] [ -e ] pattern filename...

DESCRIPTION

       Zgrep  invokes  grep  on  compressed  or  gzipped  files.   These  grep	options  will  cause  zgrep  to  terminate  with  an  error  code:
       (-[drRzZ]|--di*|--exc*|--inc*|--rec*|--nu*).  All other options specified are passed directly to grep.  If no file is specified,  then  the
       standard input is decompressed if necessary and fed to grep.  Otherwise the given files are uncompressed if necessary and fed to grep.

       If the GREP environment variable is set, zgrep uses it as the grep program to be invoked.

EXIT CODE

       2 - An option that is not supported was specified.

AUTHOR

       Charles Levert (charles@comm.polymtl.ca)

SEE ALSO

       grep(1), gzexe(1), gzip(1), zdiff(1), zforce(1), zmore(1), znew(1)

																	  ZGREP(1)
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