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Top Forums UNIX for Beginners Questions & Answers Script to grep if 404 error got generated in the log files in last 5 minutes Post 303046108 by Pranav_31 on Friday 24th of April 2020 01:20:18 AM
Old 04-24-2020
Script to grep if 404 error got generated in the log files in last 5 minutes

I have a log file which are linked with prefix current date and suffix with IP_address.log 2020_04_22.shared_http_server.192.168.XX.XX.log

I want to monitor these logs at an interval of every 5 minutes. I am looking to schedule a script at an interval of every 5 minutes,in order to grep if 404 error got generated in the log files in last 5 minutes and send the lines of the logs which contains 404 error in different file.

I have written a script to get this done and i am using cron to run this script for every 5 min.Whenever the script runs, it reads the whole log file and throws all the lines of the logs which contains 404 error in different file.But, i want those lines of the logs containing 404 error message to be sent in different file which got generated in last 5 minutes.

Code:
find /home/pranav -type f -name "2020_04_22.shared_http_server.192.168.XX.XX.log" |while read file
  do
    RESULT=$(egrep "[^0](404)" $file)
      if [[ ! -z $RESULT ]]
         then
            echo "Error(s) in $file on $HOSTNAME at "$(date)": $RESULT">> log_result.txt
     fi
  done

This script is able to grep the lines which contains 404 error message but i want those lines of the logs containing 404 error message to be sent in different file which got generated in last 5 minutes.

Could somebody help me on this what i'm i missing here?
Thank you in advance.

Last edited by rbatte1; 04-30-2020 at 04:26 PM..
 

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CG(1)																	     CG(1)

NAME
cg - Recursively grep for a pattern and store it. SYNOPSIS
cg [ -l ] | [ [ -i ] pattern [ files ] ] DESCRIPTION
cg does a search though text files (usually source code) recursively for a pattern, storing matches and displaying the output in a human- readable fashion. It is intended to give some of the functionaly of AT&T's cscope(1) tool, with the advantages of simplicity and not being language-specific. The script will colorize output if configured as such. It is typically run with a Perl regular expression to search for. The search can be made case insensitive by using the -i option. A list of files may also be specified with an additional argument after the pattern. Put the files pattern in quotes to make it be matched by Perl rather than by the shell. Running the script with no arguments will recall the results of the previous search. After the search, entries found can be edited using the vg(1) script. The -l option shows the last log made. SOME EXAMPLES
cg - alone recalls the previous search results. cg -i pattern - search the default list of files for all files matching the pattern (and case-insensitively). cg pattern '*.c' - search recursively for pattern in all *.c files. This automatically converts '*' to '.*' and '.' to '.' for you and does a Perl pattern match on all files in the tree. cg pattern *.c - search through the shell-expanded list of *.c files, so not done recursively (in other words, only the files your shell pass to the script as arguments). cg -l - show the last log made. COMMAND-LINE OPTIONS -i Do a case-insensitive search. -l Show the last log made. -p Toggle the default pager option. cg has a bulit-in pager function, which can be enabled or disabled by default (in .cgvgrc). If the default is enabled, this option disables the pager; if the default is disabled, this option enables it. -P Force the built-in pager to be disabled. FILES
${HOME}/.cglast Log file of the last search. ${HOME}/.cgvgrc Per-user configuration file (if the defaults are not desireable). ${HOME}/.cgvg/* Log files in $HOSTNAME.shell_pid form with the log of the last search. SEE ALSO
vg(1), perl(1), find(1), grep(1), cscope(1) AUTHOR
cg was written by Joshua Uziel <uzi@uzix.org>. 13 Mar 2002 CG(1)
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