to uncompress files with extension tar.gz, type at your unix prompt tar zxvf filename.tar.gz or gzcat filename.tar.gz | tar xvf - if gzip utilities is not installed on your system, get ./utils/gzip-1.2.4.tar.Z and extract by: zcat gzip-1.2.4.tar.Z | tar xvf - and then cd gzip-1.2.4 and follow the INSTALL file