Hi all.

I want to check the free space on a given FS and process the output. Right now, I'm using a temp file to avoid using df twice. This is what I'm doing


#!/usr/bin/ksh
...
df -k $FS_NAME > $TMP_FILE 2>&1
if [[ $? -ne 0 ]]; then
RESULT="CRITICAL - $(cat $TMP_FILE)"
else
cat $TMP_FILE | ...
fi
rm $TMP_FILE


So, I store the result in a temp file, with the advantage of being able to store both sysout and syserr results I can later use as an output to the script. However, I don't like having to use a temp file.

So, is there some way to do the same without the temp file? Basically I want to:

• Identify an error result from df (I'm using $? right now)
• Get syserr output (I'm using 2>&1 now)
• Process the resulting output.

If I just use a variable, as in A=$(...), I can't get the syserr, and I lose the carriage returns. Any ideas?

Thank you.