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TAR file format

File extension
.tar
File category
Description
The TAR file was specifically created in the UNIX sphere to sustain tape backup procedures. The file has been subsequently used for the collection of multiple files into a single file for distribution or storage and file archiving. TAR can also be said to be an application that can be used to treat TAR files.
Technical details
TAR file simply means the collection of files into one and this compression is usually not by default. Applications like gzip can be used to compress the entire TAR file. Therefore, the file extension is changed from .tar to .tar.gz if the compression is applied. However, the suffix would be based on the type of compression used. TAR files contain approximately 512 bytes and a file header.
Programs
Apple Archive Utility
GNU Tar
StuffIt
WinZip
Developer
The GNU Project
MIME type
application/tar
application/x-tar
applicaton/x-gtar
multipart/x-tar
application/x-compress
application/x-compressed