TIL: journalctl

man/journalctl.md

@@ -0,0 +1,40 @@
+---
+date created: Saturday, December 28th 2024, 11:25:08 am
+date modified: Saturday, December 28th 2024, 11:28:03 am
+tags:
+  - systemd
+---
+
+# journalctl
+
+the new `/var/log/syslog`
+
+- see also [systemd](systemd.md)
+
+## read journalctl logs
+
+the following flags can usually be combined, so `-f -u <service>` works as well.
+
+**follow all new logs (tail -f):**
+
+```shell
+journalctl -f
+```
+
+**display last 100 lines and follow new logs:**
+
+```shell
+journalctl -n 100 -f
+```
+
+**read logs from a specific service/unit:**
+
+```shell
+journalctl -u your-name.service
+```
+
+**read logs since last boot:**
+
+```shell
+journalctl -b
+```

man/systemd.md

@@ -1,6 +1,6 @@
 ---
 date created: Monday, April 22nd 2019, 6:51:17 pm
-date modified: Thursday, December 26th 2024, 11:48:10 am
+date modified: Saturday, December 28th 2024, 11:28:13 am
 tags:
   - systemd
   - systemctl
@@ -85,27 +85,7 @@ resolvectl statistics
 
 ## logs: journalctl / systemd journals
 
-### read journalctl logs / syslog
-
-the following flags can usually be combined, so `-f -u <service>` works as well.
-
-**follow all new logs (tail -f):**
-
-```shell
-journalctl -f
-```
-
-**display last 100 lines and follow new logs:**
-
-```shell
-journalctl -n 100 -f
-```
-
-**read logs from a specific service/unit:**
-
-```shell
-journalctl -u your-name.service
-```
+- see also: [journalctl](journalctl.md)
 
 ### configure journal / log usage