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home_server:home_server_setup:other_services:systemd [2021-03-01 Mon wk09 22:28] – [Journalctl stuff] baumkphome_server:home_server_setup:other_services:systemd [2023-12-26 Tue wk52 11:39] (current) – baumkp
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 +{{tag>systemd systemctl timer timers journalctl linux debian setup customise customisation}}
 ======systemd Stuff====== ======systemd Stuff======
   * [[https://linuxconfig.org/how-to-create-systemd-service-unit-in-linux|How to create systemd service unit in Linux]]   * [[https://linuxconfig.org/how-to-create-systemd-service-unit-in-linux|How to create systemd service unit in Linux]]
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   *''sudo journalctl -u pppoe'', use u flag to see specified unit files only.   *''sudo journalctl -u pppoe'', use u flag to see specified unit files only.
   *''sudo journalctl -k'' to see kernel messages only   *''sudo journalctl -k'' to see kernel messages only
-  *''sudo journalctl -p 3'' to see only specified error level messages and more severe. +  *''sudo journalctl -p 3'' to see only specified error priority messages and more severe. 
     * 0: emerg     * 0: emerg
     * 1: alert     * 1: alert
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     * 6: info     * 6: info
     * 7: debug     * 7: debug
 +  * ''-r'' flag is used to show in reverse chronological order.
 some links:\\ some links:\\
 [[https://www.linode.com/docs/guides/how-to-use-journalctl/|Use journalctl to View Your System's Logs]] [[https://www.linode.com/docs/guides/how-to-use-journalctl/|Use journalctl to View Your System's Logs]]