The .tar extension (or .tar.gz, ie. .tgz) in your files, comes from the "tar" command line that stands for "tape archive". 

tar was designed to read and write files to a serial device (magnetic tapes) without a filesystem. Being able to append files to an existing "tarball" was extremely handy (remember: slow, serial devices). Being able to extract only some files, too.

tar still works much the same, but most probably you use a filesystem file or stdio instead of a raw serial device.

Dad, geek, conversation liquidity provider. vrypan.net (home), @l--o--l (fun). devcoin:$lemon3

worst linux command to be honest.. impossible to remember 😅

Alchemist. 
Block Builder. 
Creator.
Degen. 
Ethereum dev. 
Farcaster Framer.

Onchain startups. Farcaster app store (@farstore) and tips (@tipn)

i go to the UI and right click uncompress 😅

Ur telling me the -xzvfghijk flag isnt intuitive?!