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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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DOVEADM-LOG(1)							      Dovecot							    DOVEADM-LOG(1)

NAME
doveadm-log - Locate, test or reopen Dovecot's log files SYNOPSIS
doveadm [-Dv] log errors [-s min_timestamp] doveadm [-Dv] log find [directory] doveadm [-Dv] log reopen doveadm [-Dv] log test DESCRIPTION
The doveadm log commands are used to locate and reopen the log files of dovecot(1). It's also possible to test the configured targets of the *log_path settings. OPTIONS
Global doveadm(1) options: -D Enables verbosity and debug messages. -v Enables verbosity, including progress counter. COMMANDS
log errors doveadm log errors [-s min_timestamp] The log errors command is used to show the last - up to 1,000 - errors and warnings. If no output is generated, no errors have occurred since the last start. -s min_timestamp An integer value, representing seconds since the epoch - also known as Unix timestamp. When a min_timestamp was given, doveadm(1) will only show errors occurred since that point in time. log find doveadm log find [directory] The log find command is used to show the location of the log files, to which dovecot(1) sends its log messages. If dovecot(1) logs its messages through syslogd(8) and doveadm(1) could not find any log files, you can specify the directory where your syslogd writes its log files. log reopen doveadm log reopen This command causes doveadm to reopen all log files, configured in the log_path, info_log_path and debug_log_path settings. These settings are configured in /etc/dovecot/conf.d/10-logging.conf. This is for example useful after manually rotating the log files. log test doveadm log test This command causes doveadm to write the message "This is Dovecot's priority log (timestamp)" to the configured log files. The used prior- ities are: debug, info, warning, error and fatal. EXAMPLE
This example shows how to locate the log files used by dovecot(1). doveadm log find Looking for log files from /var/log Debug: /var/log/dovecot.debug Info: /var/log/mail.log Warning: /var/log/mail.log Error: /var/log/mail.log Fatal: /var/log/mail.log REPORTING BUGS
Report bugs, including doveconf -n output, to the Dovecot Mailing List <dovecot@dovecot.org>. Information about reporting bugs is avail- able at: http://dovecot.org/bugreport.html SEE ALSO
doveadm(1) Dovecot v2.2 2013-11-24 DOVEADM-LOG(1)
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