poweroff, halt, reboot: add examples (#5485)

pages/linux/halt.md

@@ -1,16 +1,24 @@
 # halt
 
-> Halt, power-off or reboot the machine.
+> Halt the system.
-> More information: <https://www.freedesktop.org/software/systemd/man/halt.html>.
+> More information: <https://www.man7.org/linux/man-pages/man8/halt.8.html>.
 
-- Halt the machine:
+- Halt the system:
 
 `halt`
 
-- Power the machine off:
+- Power off the system (same as `poweroff`):
 
 `halt --poweroff`
 
-- Reboot the machine:
+- Reboot the system (same as `reboot`):
 
 `halt --reboot`
+
+- Halt immediately without contacting the system manager:
+
+`halt --force --force`
+
+- Write the wtmp shutdown entry without halting the system:
+
+`halt --wtmp-only`

pages/linux/poweroff.md

@@ -1,7 +1,24 @@
 # poweroff
 
-> Shutdown the system.
+> Power off the system.
+> More information: <https://www.man7.org/linux/man-pages/man8/poweroff.8.html>.
 
-- Poweroff the system:
+- Power off the system:
 
-`sudo poweroff`
+`poweroff`
+
+- Halt the system (same as `halt`):
+
+`poweroff --halt`
+
+- Reboot the system (same as `reboot`):
+
+`poweroff --reboot`
+
+- Shut down immediately without contacting the system manager:
+
+`poweroff --force --force`
+
+- Write the wtmp shutdown entry without shutting down the system:
+
+`poweroff --wtmp-only`

pages/linux/reboot.md

@@ -1,11 +1,24 @@
 # reboot
 
 > Reboot the system.
+> More information: <https://www.man7.org/linux/man-pages/man8/reboot.8.html>.
 
-- Reboot immediately:
+- Reboot the system:
 
 `reboot`
 
-- Reboot immediately without gracefully shutting down:
+- Power off the system (same as `poweroff`):
 
-`reboot -f`
+`reboot --poweroff`
+
+- Halt the system (same as `halt`):
+
+`rebooot --halt`
+
+- Reboot immediately without contacting the system manager:
+
+`reboot --force --force`
+
+- Write the wtmp shutdown entry without rebooting the system:
+
+`reboot --wtmp-only`