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

tldr/runsvdir

@@ -0,0 +1,21 @@
+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# runsvdir
+
+> Run an entire directory of services.
+> More information: <https://manpages.ubuntu.com/manpages/latest/man8/runsvdir.8.html>.
+
+- Start and manage all services in a directory as the current user:
+
+`runsvdir {{path/to/services}}`
+
+- Start and manage all services in a directory as root:
+
+`sudo runsvdir {{path/to/services}}`
+
+- Start services in separate sessions:
+
+`runsvdir -P {{path/to/services}}`