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Full Discussion: Check log file size every 10 minute. Alert if log not update
Top Forums Shell Programming and Scripting Check log file size every 10 minute. Alert if log not update Post 302763669 by mstafreshi on Wednesday 30th of January 2013 10:02:24 AM
Old 01-30-2013
this is a simple script . can it help find your way ?
Code:
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 .
 

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LEARN ABOUT OSF1

log

log(8)							      System Manager's Manual							    log(8)

NAME

       log - Records input and output from a program

SYNOPSIS

       /usr/sbin/log <logfile> <command>

OPERANDS

       The file in which to record the interaction being logged.  The command to execute.

DESCRIPTION

       The  log  program  runs <command> and logs the input to and output from <command> to the <logfile> file.  Input and output are logged until
       <command> exits, the log program exits, and the exit status of <command> is returned.

       The log program is used by the system  installation  procedure  and  the  it(8)	command  to  create  the  /var/adm/smlogs/install.log  and
       /var/adm/smlogs/it.log installation log files.

RESTRICTIONS

       Because	the  log  program is used in the installation standalone environment, program size was the greatest concern in its implementation.
       The log program does not search for the PATH variable to locate <command> and error messages are terse.

       The log program causes <command> to take standard input from and write standard output and standard error to  UNIX  pipes.   Some  commands
       will  not  be able to operate in this environment; therefore, it is suggested that you use the script(1) command instead.  UNIX shells will
       not issue prompts when run from log unless the shell is started with an explicit interactive switch (-i for most shells).  For example, log
       foo.tmp /sbin/sh -i

       In the previous example, foo.tmp is the name of <logfile>.

       The  log  program  intercepts  end-of-file (usually Ctrl/d).  Therefore programs which normally receive end-of-file as an exit command must
       exit by some other means.

ERRORS

       Log open error

   Explanation:
       The log program was unable to open <logfile>. Verify that the directory exists and that ownerships and permissions are set correctly.

       Exec Error

   Explanation:
       The log program was unable to execute <command>. Verify that you specified a full pathname for <command> and  that  <command>  is  an  exe-
       cutable file.

       Fork Error

   Explanation:
       The log program was unable to create one of the processes it requires to log data.

SEE ALSO

       Commands: it(8), script(1)

																	    log(8)
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