Use the command line by installing the p7zip package. Run 7z x arivia.7z to extract the file with its full directory structure.
: You can often right-click the file and select Open With > Archive Utility . arivia.7z
: Hover over 7-Zip in the menu and select Extract files... (to choose a destination) or Extract here (to unpack everything in the current folder). For macOS Users: Use the command line by installing the p7zip package
: Visit the official 7-Zip website to download and install the free, open-source software. arivia.7z