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Top Forums Shell Programming and Scripting Selecting latest entry in the log file Post 303000640 by simpsa27 on Monday 17th of July 2017 04:55:54 AM
Old 07-17-2017
Selecting latest entry in the log file

Hi there

I am trying to write a script where I will need to look for a specific word in the log file and I am aware this can be done by grep for example.

As there will be multiple entries for this I want to grep the last one to enter the log... how would I go about this - would I have to use tail?

I have attached an example below:
Code:
7/17/17 09:15:55.990 AM BST [INFO] [TimPollThreadPool.Thread1] [Manager.com.timestock.tess.services.tim.TimIo] File 'Wynyard_MTP_Primary-defect-15002793530000919233.xml' read, length=4231
7/17/17 09:15:56.005 AM BST [INFO] [TimPollThreadPool.Thread1] [Manager.com.timestock.tess.services.tim.TimIo] File 'Wynyard_MTP_Primary-login-15002793540000119307.xml-enc' read, length=1824
7/17/17 09:15:56.018 AM BST [INFO] [TimPollThreadPool.Thread1] [Manager.com.timestock.tess.services.tim.TimIo] File 'Wynyard_MTP_Primary-login-15002793540000121342.xml-enc' read, length=1056
7/17/17 09:15:56.024 AM BST [INFO] [TimPollThreadPool.Thread1] [Manager.com.timestock.tess.services.tim.TimIo] File 'Wynyard_MTP_Primary-login-15002793550000098410.xml-enc' read, length=1040
7/17/17 09:15:56.030 AM BST [INFO] [TimPollThreadPool.Thread1] [Manager.com.timestock.tess.services.tim.TimIo] File 'Wynyard_MTP_Primary-defect-15002793550000098410.xml' read, length=34131

As you can see their are multiple "login" & "defect" which is what I will need to be searching for how would I go about selecting the last or latest entry in the log file.

Thanks in advance

Alex
 

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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 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 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. 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 v2.1 2012-02-22 DOVEADM-LOG(1)
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