Move pages under tldr, lint run.sh, update docs

tldr/linux/halt

@@ -0,0 +1,29 @@
+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# halt
+
+> Halt the system.
+> More information: <https://manned.org/halt.8>.
+
+- Halt the system:
+
+`halt`
+
+- Power off the system (same as `poweroff`):
+
+`halt --poweroff`
+
+- Reboot the system (same as `reboot`):
+
+`halt --reboot`
+
+- Halt immediately without contacting the system manager:
+
+`halt --force`
+
+- Write the wtmp shutdown entry without halting the system:
+
+`halt --wtmp-only`