I have just uploaded tar.gz archive to my Centos server from my home Windows 7 computer. Before that, it was extracted from .zip archive. When I try to extract it: tar -xvf file.tar.gz gunzip file.tar.gz It always give me error: "not in gzip format" The archive is not corrupted, because it is possible to extract it in Windows with Winrar. The archive is quite big, more than 100 MB. I don't know, what's the problem. Could you help me please? Thanks. Peter