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

tldr/sh

@@ -0,0 +1,26 @@
+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# sh
+
+> Bourne shell, the standard command language interpreter.
+> See also `histexpand` for history expansion.
+> More information: <https://manned.org/sh>.
+
+- Start an interactive shell session:
+
+`sh`
+
+- Execute a command and then exit:
+
+`sh -c "{{command}}"`
+
+- Execute a script:
+
+`sh {{path/to/script.sh}}`
+
+- Read and execute commands from `stdin`:
+
+`sh -s`