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Full Discussion: while do done loop problem
Top Forums Shell Programming and Scripting while do done loop problem Post 302269168 by himvat on Wednesday 17th of December 2008 03:14:20 AM
Old 12-17-2008
1) There is only one file to be scaned

2)This file will be scaned after every 1 hour.

3) Let us suppose we scan the file right now . And suppose this gives us a count of ERROR as 5 . We will assume this as initial count.

4) After 1 hour we will scan the same log file once again. Let us suppose this gives the count as 10. Now we have to compare this 10 with the last count 5 .

5) Now "10" is the final count and the "5" is the initial count.

6) In the next scan , "10" will become initial count and some new number will become the final count.

7) As we created the "a.log" file earlier. I want to move "10" to this "a.log". So, that I can compare in the below mention way

Code:
 
#!/bin/sh
if [  ! -f a.log ]; then
   touch a.log
iCOUNT=`a.log | wc -l`
fCOUNT=`grep -c ERROR b.log`
if [ ${fCOUNT} -gt ${iCOUNT} ]; then
   echo "1"
else
   echo "0"
fi
$fCOUNT > a.log
else
iCOUNT=`a.log | wc -l`
fCOUNT=`grep -c ERROR b.log`
if [ ${fCOUNT} -gt ${iCOUNT} ]; then
  echo "1"
else
  echo "0"
fi
fi


a.log will have only the number . I guess I am making a mistake in

iCOUNT=`a.log | wc -l`

Please Advice
 

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LEARN ABOUT DEBIAN

logtop

LOGTOP(1)						      General Commands Manual							 LOGTOP(1)

NAME

       logtop - Realtime log line rate analyser

SYNOPSIS

       logtop [OPTIONS]

DESCRIPTION

	logtop is a System Administrator tool analyzing line rate on stdin.
	It reads on stdin and print a constantly updated result
	displaying, in columns:
	Line number, count, frequency, and the actual line.

	 $ tail -f FILE | logtop
	is the friendly version of:
	 $ watch 'tail FILE | sort | uniq -c | sort -gr'

OPTIONS

       -s, --size=K
	      Only keep K lines in memory, instead of 10000.

       -q, --quiet
	      Do not display a live view of the data, only display a top at exit.

       -l, --line-by-line=K
	      Print result line by line, in a machine friendly format, K is the number of result to print per line.

		Line by line format is : [%d %f %s	]*

		  %d : Number of occurences
		  %f : Frequency of apparition
		  %s : String (Control chars replaced by dots.

       -i, --interval=K
	      Interval between graphical updates, in seconds. Defaults to 1.

       -h, --help
	      Show summary of options.

       -v, --version
	      Show version of program.

EXAMPLES

       Here are some logtop usage examples.

       tail -f cache.log | grep -o "HIT|MISS" | logtop

       Realtime hit / miss ratio on some caching software log file.

       tail -f access.log | cut -d' ' -f1 | logtop -s 10000

       Realtime most querying IPs on your server, as long as log lines in access.log starts with the client IP.

       tail -f access.log | cut -d' ' -f7 | logtop -s 10000

       Realtime most requested web pages in a NCSA like log file.

       cat auth.log | grep -v "CRON" | grep -o ": .*" | logtop -q -s 100000

       Display a one-shot simple analyse of your auth.log.

SEE ALSO

       watch(1)

AUTHOR

       logtop was written by Julien Palard.

       This manual page was written by Julien Palard <julien@palard.fr>, for the Debian project (and may be used by others).

								  April 16, 2011							 LOGTOP(1)
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