Methods to match certain context of commands directed to a network technology or a network design from configuration files and a user interface to display these results. A language with the simple syntax similar to the human language is provided. The language includes rules to define the parameter and syntax for the parameter operations and also standard functions to parse commands. A script file can be conveniently written in this language to filter the desired contexts from a configuration file. In the exemplary embodiment, the system translates the script file to an executable standard Perl programming and Perl programming is run with the configuration file as the input. The result is displayed in the graphic user interface, which is designed to work with an interactive network topology map.