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Full Discussion: Capturing the return code from background process
Top Forums Shell Programming and Scripting Capturing the return code from background process Post 302876033 by rkumar28 on Thursday 21st of November 2013 12:54:04 PM
Old 11-21-2013
Capturing the return code from background process
Hi All,

I was out not working on unix from quite sometime and came back recently. I would really appreciate a help on one of the issue I am facing....

I am trying to kick off the CodeNameProcess.sh in PARALLEL for all the available codes. The script runs fine in parallel.
Let say there are 50 codes. I am kicking off the CodeNameProcess.sh 50 times in parallel as a background process.
This is working fine.

ISSUE:
I am trying to see out of 50 codes, if for any one of the codes, the script CodeNameProcess.sh errors out,
I want to capture return code ($?) for that. All I am trying to do is to capture the return code of all the 50 codes.
So that at the end of all the 50 codes execution, I can do something with the process if any ONE out of 50 codes has failed.

Below is the code snippet below that is kicking off all the codes successfully in parrallel(which is working fine) but
I am not able to get the proper RETURN CODE even if the scripts for one of the code has failed.
Is there a way to capture the return code from CodeNameProcess.sh running in background.

Code:
#!/bin/ksh
ERROR=0

for codes in `cat ${DIR}/filename.txt`
do

	. /scripts/CodeNameProcess.sh $codes &
	rc=$? 
	# I am not able to get the proper return code back from $rc above. 
	#It always show success even if there is an error in CodeNameProcess.sh for one of the codes

	echo "The script launched for ${codes}"


		if [ ${rc} -ne 0 ]
		then
			ERROR=1
			echo "the script for ${codes} FAILED....Please check...."
		fi

done


if [ ${ERROR} -ne 0 ]
then
	 echo "Codename script failed for some of the codes....Please check..."

else
	echo "The Process Complete Successfully for all 50 codes."
	
fi


I would really appreciate your help.

Please Note: The script needs to kick off the CodeNameProcess.sh in parallel for all codes hence kicking it
off as a bacground process: CodeNameProcess.sh &
rkumar28
 

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LEARN ABOUT DEBIAN

locale::script

Locale::Script(3perl)					 Perl Programmers Reference Guide				     Locale::Script(3perl)

NAME

       Locale::Script - standard codes for script identification

SYNOPSIS

	  use Locale::Script;

	  $script  = code2script('phnx');		      # 'Phoenician'
	  $code    = script2code('Phoenician'); 	      # 'Phnx'
	  $code    = script2code('Phoenician',
				 LOCALE_CODE_NUMERIC);	      # 115

	  @codes   = all_script_codes();
	  @scripts = all_script_names();

DESCRIPTION

       The "Locale::Script" module provides access to standards codes used for identifying scripts, such as those defined in ISO 15924.

       Most of the routines take an optional additional argument which specifies the code set to use. If not specified, the default ISO 15924
       four-letter codes will be used.

SUPPORTED CODE SETS

       There are several different code sets you can use for identifying scripts. The ones currently supported are:

       alpha
	   This is a set of four-letter (capitalized) codes from ISO 15924 such as 'Phnx' for Phoenician.

	   This code set is identified with the symbol "LOCALE_SCRIPT_ALPHA".

	   The Zxxx, Zyyy, and Zzzz codes are not used.

	   This is the default code set.

       numeric
	   This is a set of three-digit numeric codes from ISO 15924 such as 115 for Phoenician.

	   This code set is identified with the symbol "LOCALE_SCRIPT_NUMERIC".

ROUTINES

       code2script ( CODE [,CODESET] )
       script2code ( NAME [,CODESET] )
       script_code2code ( CODE ,CODESET ,CODESET2 )
       all_script_codes ( [CODESET] )
       all_script_names ( [CODESET] )
       Locale::Script::rename_script  ( CODE ,NEW_NAME [,CODESET] )
       Locale::Script::add_script  ( CODE ,NAME [,CODESET] )
       Locale::Script::delete_script  ( CODE [,CODESET] )
       Locale::Script::add_script_alias  ( NAME ,NEW_NAME )
       Locale::Script::delete_script_alias  ( NAME )
       Locale::Script::rename_script_code  ( CODE ,NEW_CODE [,CODESET] )
       Locale::Script::add_script_code_alias  ( CODE ,NEW_CODE [,CODESET] )
       Locale::Script::delete_script_code_alias  ( CODE [,CODESET] )
	   These routines are all documented in the Locale::Codes man page.

SEE ALSO

       Locale::Codes
       Locale::Constants
       http://www.unicode.org/iso15924/
	   Home page for ISO 15924.

AUTHOR

       See Locale::Codes for full author history.

       Currently maintained by Sullivan Beck (sbeck@cpan.org).

COPYRIGHT

	  Copyright (c) 1997-2001 Canon Research Centre Europe (CRE).
	  Copyright (c) 2001-2010 Neil Bowers
	  Copyright (c) 2010-2011 Sullivan Beck

       This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

perl v5.14.2							    2011-09-26						     Locale::Script(3perl)
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