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

tldr/retry

@@ -0,0 +1,21 @@
+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# retry
+
+> Repeat command until it succeeds or a criterion is met.
+> More information: <https://github.com/minfrin/retry>.
+
+- Retry a command until it succeeds:
+
+`retry {{command}}`
+
+- Retry a command every n seconds until it succeeds:
+
+`retry --delay={{n}} {{command}}`
+
+- Give up after n attempts:
+
+`retry --times={{n}} {{command}}`