4/28/2023 0 Comments Macos tar lzipMay be used at any life-cycle phase for bundling files. tar.gz, tar.br, tar.bz2, tar.xz, tar.zstįor an overview of tar version history, See Notes. tgz, tbz, txz, tzst, or with double file extension, e.g. Resulting compressed files can be found named with single extension, e.g. The tar file format doesn't feature native data compression, so tar archives are often compressed with an external utility such as gzip, bzip2, XZ (using 7-Zip / p7zip LZMA / LZMA2 compression algorithms), Brotli, Zstandard, and similar tools to reduce the archive's size for portability and data backup. Implementations shall support all blocksize values less than or equal to 32256 that are multiples of 512." The default blocksize for this format for character special archive files shall be 10240. 's Pax documentation clarifies that the pax utility supports the ustar format, defined as, "The tar interchange format see the EXTENDED DESCRIPTION section. The pax utility uses "-x" in the command string to output the archive format as ustar. "older implementations that do not fully support these extensions will extract the metadata into regular files, where the metadata can be examined as necessary." The POSIX.1 2001 standard defined the pax utility and pax format that serves as an extension of the tar format. FreeBSD, an open source Unix-like operation system, provides documentation of tar file format versions and stresses the compatibility between extended tar formats and ustar tar archives defined in the POSIX.1 1988 standard. This extended tar or tar.h archive format stores new data in ustar-compatible archive entries that use "x" or "g" typeflags. The POSIX.1 2001 standard also features changes to the applicable typefield values. uid, gid = Similar to the user name and group name fields, UID (user ID) and GID (group ID) fields can be of arbitrary length.Note that there is no length limit on this field, allowing conforming archives to store files much larger than the historic 8GB limit. uname, gname = The user name and group name stored here are encoded in UTF-8 and can thus include non-ASCII characters. This can also include non-ASCII characters as it is encoded in UTF-8.
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