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KSH problem - how do i redirect three times?

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# 15  
Old 10-01-2008
Quote:
Originally Posted by otheus
"super advanced system admin expert methods" means writing answers without first understanding the question. Smilie

Seriously, at the *beginning* of the script, you could do something like this:

Code:
exec >standard.out 2>error.out

Every time there's an error, you stop the script and output the error.out file. However, it doesn't deal with automatically printing the normal output. However, you could go to another terminal and run:
Code:
tail -f standard.out

but I don't think that suits your purpose.
ha ha ha...(to your first sentence - otheus). Smilie

yes, you're right that method doesn't suit my purpose. i think i'll do a simple check to see if the file got created.

Code:
ls -lR ${BUILD_CODE} 2>&1 >${REL_FILES}/${RELNO}.txt | tee -a ${LOGFILE}
if [ ! -e ${REL_FILES}/${RELNO}.txt ]
  then 
  echo "ERROR - release file creation failed 
       exit
fi

similar to your solution arunprasad.
# 16  
Old 10-01-2008
Quote:
Originally Posted by Arunprasad
you are using err file (redirecting the error to stderr)wright?
lets take

ls data >err 2>&1 | tee -a somefile
if [ ! -s err ]
then
{do whatever you want}
fi

here as per the code the err file will load with some error message when failure occurs in ls.
is it feasible?
this is all done and dusted now but i'd just like to say to Arunprasad, you were correct, it's -s i need to use, because the file gets created regardless of any errors. the indication of failure is size of the file.

thank you.
# 17  
Old 10-01-2008
hi mjays,

-s could not be the indication of the error.
but the err file will be created while execution of that part of code wright?

err 0 bytes of size.
when the ls faces any errors that will be updated in err file.
so the size will increase

so with -s option we come to know some error is there or not!
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