I wrote a script that checks particular device path directory which is full or more than 90% used, and will search older file inside and delete it. My code looks like this:

#!/usr/bin/ksh
ref=90

df -k | grep /cbmdata/00/gdd | tr -d '%' | \
while read a b c d e other
do

 if (( $e >= $ref )) && continue
 then
 line=`find /cbmdata/00/gdd -name "LOGS*" |sort -nr |tail -1`
    # echo $line
    rm -f $line
 fi

done

Try this (untested ):

#!/usr/bin/ksh
ref=90

while [ 1 ] 
do
  df -k | grep /cbmdata/00/gdd | tr -d '%' | \
  read a b c d e other
  if (( "$e" >= "$ref" ))
  then
    line=`find /cbmdata/00/gdd -name "LOGS*" |sort -nr |tail -1`
    # echo $line
    rm -f $line
  else
    exit 0
  fi
done

I tested it\ and seems to be working well/
I need to test for some time
Thanks

You really should try to move the find command outside the while loop, it is the slowest part of your program and really only needs to be done once.

If your script was in ksh I would have suggested using a co-process and using 'read -p' however it is not, so you could do this by using a temporary file or a named pipe.

ok, I ll try thank