udevadm: add page (#6478)

pages/linux/udevadm.md

@@ -0,0 +1,28 @@
+# udevadm
+
+> Linux `udev` management tool.
+> More information: <https://www.freedesktop.org/software/systemd/man/udevadm>.
+
+- Monitor all device events:
+
+`sudo udevadm monitor`
+
+- Print `uevents` sent out by the kernel:
+
+`sudo udevadm monitor --kernel`
+
+- Print device events after being processed by `udev`:
+
+`sudo udevadm monitor --udev`
+
+- List attributes of a device:
+
+`sudo udevadm info --attribute-walk --path {{/dev/sda1}}`
+
+- Reload all `udev` rules:
+
+`sudo udevadm control --reload-rules`
+
+- Trigger all `udev` rules to run:
+
+`sudo udevadm trigger`