UNIX Log File Content - Duplication Issue

UNIX for Beginners Q & A
1

I have a shell script with 2 run time arguments. During the execution if i got any error, then it needs to redirected to a error file and in console. Also both error and output to be redirected to a log file.

Error output is getting copied to err file and getting displayed in console too. But in log file the output and error message it getting redirected twice. I am not willing to use set -x option.

#! /bin/sh
errExit ()
{
    errMsg=`cat $1.log >> "$1".err`
    cat "$1".err | tee /dev/fd/3    
   return
}
test()
{
logfile=$1
exec 3>&1 1>>"${logfile}".log 2>&1
echo "$1"
echo "$2"
echo " "
echo "#################################################"
echo "Hi Hello,This is first function"
echo "#################################################"
if [[ -z "$2" ]];
then 
errExit $logfile
return
else
#<some Commands Here>
fi
}
test_1()
{
logfile=$1
exec 3>&1 1>>"${logfile}".log 2>&1
echo "$1"
echo "$2"
echo " "
echo "#################################################"
echo "Hi Hello,This is second function"
echo "#################################################"
if [[ -z "$2" ]];
then 
errExit $logfile
return
else
#<some Commands Here>
fi
}
2

I see that you append the output to $logfile. Does it already exist when you run this?

Perhaps adding `date` to the Hi Hello echo statement might show you if this is from a previous run.

What output do you actually have from this?

Kind regards,
Robin

3

Closing thread as this looks like homework, but mostly because once again you posted twice knowing its against our rules and for that reason you will receive yet again a infraction...
Please continue here:
Print Error in Console and both Error & Output in Log file - UNIX

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