May 26, 2018

Fetch and convert new messages of a logfile

The fetchlog utility displays the last new messages of a logfile. It is similar like tail 1 but offers some extra functionality like pattern matching with regular expressions or output formatting. To show only the new messages appeared since the last call fetchlog uses a bookmark to remember which messages have been fetched.

fetchlog works on syslog generated logfiles as well as other logfiles.

fetchlog can be used standalone or as a Nagios TM plugin. Together with Net-SNMP one can look at/monitor new messages in remote logfiles.

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-Alexander Haderer