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

tldr/mysqld

@@ -0,0 +1,37 @@
+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# mysqld
+
+> Start the MySQL database server.
+> More information: <https://dev.mysql.com/doc/refman/en/mysqld.html>.
+
+- Start the MySQL database server:
+
+`mysqld`
+
+- Start the server, printing error messages to the console:
+
+`mysqld --console`
+
+- Start the server, saving logging output to a custom log file:
+
+`mysqld --log={{path/to/file.log}}`
+
+- Print the default arguments and their values and exit:
+
+`mysqld --print-defaults`
+
+- Start the server, reading arguments and values from a file:
+
+`mysqld --defaults-file={{path/to/file}}`
+
+- Start the server and listen on a custom port:
+
+`mysqld --port={{port}}`
+
+- Display help:
+
+`mysqld --verbose --help`