Query failed: connection to localhost:9312 failed (errno=111, msg=Connection refused). .tgz and .gz question - Genius Bar Discussions on AppleInsider Forums Toggle navigation All Forums Recent Posts Sign In .tgz and .gz question g_warren Posted: March 14, 2005 10:01AM in Genius Bar edited January 2014 When creating a file to be downloaded from my website, and compressing it, are files .tgz and .gz exactly the same? i.e. are these interchangeable? Thanks Comments Reply 1 of 1 qchem Posts: 73member March 14, 2005 10:09AM Usually they are the same, but not always.Tar (the t in tgz) simply creates an archive of files and was originally used for backing up to tapes.Gzip actually compresses files or archives. Sign In or Register to comment.