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format file ustar

What is an ustar file and how do I open an ustar file?

A uniform standard tape archive format file is integrated with data archiving specifications used to store uncompressed files in one archive file saved in the USTAR format. The content of a uniform standard tape archive format file is also implemented with USTAR formatting standards, and these standards integrate functionality extension definitions to the TAR archive format. Header definitions of these uniform standard tape archive format files are longer than the header definitions of a TAR file. Affixed with the .ustar extension, a uniform standard tape archive format file can also have a longer filename than the character limit required for filenames of TAR archives. More details associated to the files stored in a uniform standard tape archive format file are also available as opposed to TAR archive files, which provide limited information about each file included in the archive. These USTAR files can be created and decompressed to extract its archived files using many file compression and decompression tools implemented with support for creating and decompressing TAR archives.

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Detail ustar file extension information:
File Type: ustar
File Format: Uniform Standard Tape Archive Format File
Primary Association: Data Files
Mime Type: application/x-ustar, multipart/x-ustar