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

tldr/linux/dirb

@@ -0,0 +1,25 @@
+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# dirb
+
+> Scan HTTP-based webservers for directories and files.
+> More information: <http://dirb.sourceforge.net>.
+
+- Scan a webserver using the default wordlist:
+
+`dirb {{https://example.org}}`
+
+- Scan a webserver using a custom wordlist:
+
+`dirb {{https://example.org}} {{path/to/wordlist.txt}}`
+
+- Scan a webserver non-recursively:
+
+`dirb {{https://example.org}} -r`
+
+- Scan a webserver using a specified user-agent and cookie for HTTP-requests:
+
+`dirb {{https://example.org}} -a {{user_agent_string}} -c {{cookie_string}}`