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Top Forums Shell Programming and Scripting Help with scritp to count an specific word into a log Post 302093715 by aigles on Monday 23rd of October 2006 03:54:01 AM
Old 10-23-2006
You can do something like this :
Code:
#!/usr/bin/ksh

#
# Define logile and searched word
#

log_file=logfile
searched_word=word
prv_line_count_file=${log_file}.prv_count

#
# Get previous line count
#

if [ -f ${prv_line_count_file} ]
then
   prv_line_count=$(<${prv_line_count_file})
else
   prv_line_count=0
fi

#
# Get actual line count and memorize it
#

line_count=$(awk 'END {print NR}' ${log_file})
echo ${line_count} > ${prv_line_count_file}

#
# If logfile is smaller, start searching at the first line
#

if [ ${prv_line_count} -gt ${line_count} ]
then
   prv_line_count=0
fi

#
# Search for word
#

awk -v num=${prv_line_count} \
    -v word="${searched_word}" \
    'NR>num && $0~word { count +=1 } END { print count+0 }' \
    ${log_file}

jean-Pierre.
 

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UNBUFFER(1)						      General Commands Manual						       UNBUFFER(1)

NAME
unbuffer - unbuffer output SYNOPSIS
unbuffer program [ args ] INTRODUCTION
unbuffer disables the output buffering that occurs when program output is redirected from non-interactive programs. For example, suppose you are watching the output from a fifo by running it through od and then more. od -c /tmp/fifo | more You will not see anything until a full page of output has been produced. You can disable this automatic buffering as follows: unbuffer od -c /tmp/fifo | more Normally, unbuffer does not read from stdin. This simplifies use of unbuffer in some situations. To use unbuffer in a pipeline, use the -p flag. Example: process1 | unbuffer -p process2 | process3 CAVEATS
unbuffer -p may appear to work incorrectly if a process feeding input to unbuffer exits. Consider: process1 | unbuffer -p process2 | process3 If process1 exits, process2 may not yet have finished. It is impossible for unbuffer to know long to wait for process2 and process2 may not ever finish, for example, if it is a filter. For expediency, unbuffer simply exits when it encounters an EOF from either its input or process2. In order to have a version of unbuffer that worked in all situations, an oracle would be necessary. If you want an application-specific solution, workarounds or hand-coded Expect may be more suitable. For example, the following example shows how to allow grep to finish pro- cessing when the cat before it finishes first. Using cat to feed grep would never require unbuffer in real life. It is merely a place- holder for some imaginary process that may or may not finish. Similarly, the final cat at the end of the pipeline is also a placeholder for another process. $ cat /tmp/abcdef.log | grep abc | cat abcdef xxxabc defxxx $ cat /tmp/abcdef.log | unbuffer grep abc | cat $ (cat /tmp/abcdef.log ; sleep 1) | unbuffer grep abc | cat abcdef xxxabc defxxx $ BUGS
The man page is longer than the program. SEE ALSO
"Exploring Expect: A Tcl-Based Toolkit for Automating Interactive Programs" by Don Libes, O'Reilly and Associates, January 1995. AUTHOR
Don Libes, National Institute of Standards and Technology 1 June 1994 UNBUFFER(1)
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