Tips-&-Tricks.md

@@ -338,6 +338,22 @@ Type Ctrl/A and then X in order to exit from `minicom`.
 * Reference data for APNs (used to access the internet on the mobile network) is stored in the directory `/usr/share/mobile-broadband-provider-info`
 * Reference data for international dialling is stored in the locale file, in the LC_TELEPHONE section e.g. `/usr/share/i18n/locales/ll_CC` where `ll` is the language code and `CC` is the country code.
 
+## Managing Journals
+
+By default, the Librem 5 uses `journald` for system journaling.
+
+The system journal can get very big, which consumes significant scarce disk space and makes the journal slow to find things in.
+
+To have the system journal automatically cleaned periodically, edit the file `/etc/systemd/journald.conf` and set values for `SystemMaxUse` and `MaxFileSec`. Unless you are specifically trying to troubleshoot an infrequent problem, values of `500M` and `1month` are reasonable.
+
+By default `journald` will forward to `syslogd` but by default a suitable `syslogd` won't be running and so the forwarded messages won't go anywhere. If you prefer to use `syslogd`, rather than `journald`, for examining logged messages then
+
+`sudo apt install rsyslog`
+
+or such other implementation of `syslogd` as you prefer.
+
+Note that the command to examine logged messages via `journald` is `journalctl` whereas messages logged by `syslogd` go in `/var/log/syslog` (unless you configure otherwise).
+
 ## Tutorials
 
 ### SECURE SHELL (`ssh`)