Listing 1 Script to trim the SNMP collected data to last 2000 entries

#!/bin/sh
# ------------------------------------------------------------
# Script to trim the SNMP collected data to last 2000 entries
# This way we can archive the old entries rather than filling
# up the disk space and slowing down the system
# Version 1.0
# ------------------------------------------------------------
cd /var/opt/OV/share/databases/snmpCollect/
ll /var/opt/OV/share/databases/snmpCollect/|grep "!" |awk \
  '{print $9}'|sed 's/!//g' >/var/opt/OV/share/tmp/collect_data_files
FILE=/var/opt/OV/share/tmp/collect_data_files
cat /dev/null>/var/opt/OV/share/tmp/collect_data_files_trim

while read LINE
do
for i in $LINE
do
if [ -s $i ]
then
echo $i>>/var/opt/OV/share/tmp/collect_data_files_trim
fi
done
done <$FILE

FILETRIM=/var/opt/OV/share/tmp/collect_data_files_trim
LOGFILE=/tmp/snmpcoldatatrim.log
echo "SNMPCOLLECT DATA TRIm BEGINS" >$LOGFILE

while read LINE
do
for i in $LINE
  do

echo "Trimming of $i starts now" >>$LOGFILE
lineno=`snmpColDump $i | wc -l`
      if [  $lineno -gt 2000 ]
        then
          lineno=`expr $lineno - 2001`
      else
        lineno=1
        fi
          snmpColDump -tTI $i | sed  -n $lineno',$p' |
      awk -F\t  '{printf("%d\t%d\t%s\t%lg\n",  $4, $5, $6, $3)}' |
      snmpColDump -r - $i
        /usr/bin/rm $i~
echo "Trimming of $i finished now" >>$LOGFILE
done
done <$FILETRIM