This runs a system command on the server (note: this is often disabled by modern web hosts for security reasons).

. It proved that if you don't "lock the door" with a password, a simple search engine can turn a private security camera into a public stage.

: Ensure that your server is configured to parse files with the .shtml extension for SSI directives.

An (Synchronized HTML) is a standard HTML file with a special superpower: Server-Side Includes (SSI).

: It can be used to insert simple dynamic information, such as the current date, a hit counter, or the last modified time of a file.