Check log file size every 10 minute. Alert if log not update

Shell Programming and Scripting
1

How to check log size every 10min. by script (can use crontab)
if log size not change with alert "Log not update"

Base run on SunOS  5.8 Generic_Virtual sun4u sparc SUNW,SPARC-Enterprise

logFiles="log1.log log2.log"
logLocation="/usr/home/test/log/"

Out put.

Tue Jan 31 16:24:03 ICT 2013
log1.log :: Log not running :: Pls Check Service   1  minute.
log2.log :: Log not running :: Pls Check Service   2  minute.
 
Tue Jan 31 16:25:03 ICT 2013
log1.log :: Log not running :: Pls Check Service   3  minute.
log2.log :: OK
 
Tue Jan 31 16:26:04 ICT 2013
log1.log :: Log not running :: Pls Check Service   1  minute.
log2.log :: Log not running :: Pls Check Service   2  minute.
 
Tue Jan 31 16:27:04 ICT 2013
log1.log :: Log not running :: Pls Check Service   3  minute.
log2.log :: Log not running :: Pls Check Service   4  minute.
2

What have you tried?

3

this is a simple script . can it help find your way ?

os=ofs #old size
logFile=logFile

# test log file exists !
test -r $logFile || { echo "can't open $logFile"; 1>&2; exit 1; }

# get current log file size !
cfs=`ls -l $logFile | awk '{print $5}'`

# test to see file that keeps old size exists !
test -r $os || { echo 'not changed' 1>&2; echo $cfs>$os; exit 1; }

# old file size is empty !
if test `ls -l $os | awk '{print $5}'` -eq 0
then
        echo 'not changed' 1>&2;
        exit 1;
fi

oldsize=`sed -n '1,1p' $os`

if test $oldsize -eq $cfs
then
        echo 'not changed' 1>&2
else
        echo 'changed' 1>&2
fi

echo $cfs >$os

certainly above code with its structure can be write better and more efficient . i wrote it very quickly with my limited skill .

4

I'm use crontab.

#!/bin/ksh
#===============================================================================

#########################################
# Main Program 
#########################################
msf_file=/usr/home/log/SMDB_m4_Tx.log
msf_size=`ls -l $msf_file|awk '{ print $5 }'`

sleep 600

msf_size1=`ls -l $msf_file|awk '{ print $5 }'`
 
if [ $msf_size -eq $msf_size1 ]; then
        echo  SMDB_m4_Tx.log NOT OK.
else
        echo  SMDB_m4_Tx.log OK.
fi