by ryan sanders.
http://www.7-zip.org/<- what i use vs winzip. 500 megs of text files = winzip an hour or longer. 7zip = 10 minutes. it seems like. right click in "file explorer" of windows = fast options of basic formats.
.tgz vs .tar.gz the double compression may cause issues. and folks not understanding (same thing just different way of showing it. as far as i know?
.tgz = tar first, then gzip
.tar = tar
.gz = gzip
.tar.gz = tar first then gzip
for 7-zip = adding to archive (via right click) and choosing tar then click ok, then repeat but choose gzip next then ok and then if need be rename file extension?