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

tldr/case

@@ -0,0 +1,17 @@
+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# case
+
+> Bash builtin construct for creating multi-choice conditional statements.
+> More information: <https://www.gnu.org/software/bash/manual/bash.html#index-case>.
+
+- Match a variable against string literals to decide which command to run:
+
+`case {{$tocount}} in {{words}}) {{wc -w README}}; ;; {{lines}}) {{wc -l README}}; ;; esac`
+
+- Combine patterns with |, use * as a fallback pattern:
+
+`case {{$tocount}} in {{[wW]|words}}) {{wc -w README}}; ;; {{[lL]|lines}}) {{wc -l README}}; ;; *) {{echo "what?"}}; ;; esac`