After extracting the archive to a folder, you need to run the file called "abc".
However, you need to run it with a terminal. There are three ways to do this.

OPTION A)
    1. Right click "abc" in your file manager.
    2. Select "Run in a terminal" from the menu.

    The menu item might be called slightly differently.

OPTION B)
    1. Right click in the folder where you extracted ABC.
    2. Select "Open terminal" form the menu.
    3. Type  ./abc  in your terminal, then hit enter.

OPTION C)
    1. Open a terminal
    2. Navigate to where you extracted ABC

        cd /path/to/ABC/

    3. Run ABC from there

        ./abc
