INSTALLATION INSTRUCTIONS: ---------------------------------- The file sage-x.y.z-x86_64-Linux.tgz, which you download here, contains a pre-built version of SAGE that can be decompressed into a directory and run from there. Just type tar zxvf sage-x.y.z-x86_64-Linux.tgz then change into the resulting directory and type "./sage" to run SAGE. This binary should run on many 64-bit linux systems, even non-Debian/Ubuntu ones. If it doesn't, you'll probably have to just build Sage from source, which isn't hard. LZMA: If the binary ends on *.lzma you can extract it using tar --lzma -xf sage-x.y.z-...tar.lzma XZ: If the binary ends on *.xz you can extract it via tar -xJvf sage-*...tar.xz or any GUI tool like file-roller or via right-click extract in a file browser You can also use XZ to extract LZMA files.