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Full Discussion: getting garbage in the output file of shell script
Top Forums Shell Programming and Scripting getting garbage in the output file of shell script Post 302522740 by manuu on Monday 16th of May 2011 12:37:10 PM
Old 05-16-2011
I guess that you need to first separate stdout from stderr when you call the script
./script.sh > stdout.log 2>stderr.log

Also, I'd redirect to /dev/null the ouput from calls like:
pr_cnt=`ps -ef|grep "$SCRIPT_NAME$" |grep -v grep | grep -v $pid |wc -l`
But it could be better to simple redirect what you are looking to an individual file.

Last command also could be rewritted to something nicer...

ps -p $pid >/dev/null && {
echo "`date '+%Y-%m-%d %T'` :: ERROR : Another instance of script for $SCRIPT_NAME is already running." >> $LogDir/$LogFileName
exit 1
} || {
echo "`date '+%Y-%m-%d %T'` :: INFO : Upload Process Started" >> $LogDir/$LogFileName
}
Last edited by manuu; 05-16-2011 at 01:38 PM.. Reason: mistaken logic
 

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LEARN ABOUT ULTRIX

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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