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Use-journalctl-to-check-system-logs.md

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  • Date : 2018-01-22
  • Tags : #sysadmin #logging

Use journalctl to check system logs

Logging and Monitoring are important factor for system admin. Checking the log will help you have a closer look into the issue. One tool could help you will handy features is journalctl.

Here are simple options :

  • -f : follow the log (tailf)
  • -u [service] : filter to show only [service] logs
  • --since=[date] : Show entries not older than the specified date
  • --until=[date] : Show entries not newer than the specified date

Example :

$ sudo journalctl -u nginx.service
$ sudo journalctl -u nginx.service --since yesterday
$ sudo journalctl -u nginx.service --since "2018-01-01" --until today