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

tldr/linux/ports

@@ -0,0 +1,21 @@
+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# ports
+
+> Update/list the ports tree on a CRUX system.
+> More information: <https://manned.org/ports>.
+
+- Update the ports tree:
+
+`ports -u`
+
+- List the ports in the current tree:
+
+`ports -l`
+
+- Check the differences between installed packages and the ports tree:
+
+`ports -d`