i downloaded XAMPP for Linux but cannot extract tar.gz archive
xampp-linux-1.8.1.tar.gz is located on my desktop and i follow these steps provided in instruction:
1. type in su in shell
2. type in tar xvfz xampp-linux-1.8.1.tar.gz -C /opt
and i get error "Cannot open: no such file in directory. Error is not recoverable: exiting now. Child returned status 2"
also tried to use tar -zxvf xampp-linux-1.8.1.tar.gz, got the same error