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Xar (archiver)

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Xar (archiver)

xar
Filename extension .xar
Uniform Type Identifier (UTI) com.apple.xar-archive
Magic number xar!
Latest release
1.5.3
(9 December 2009 (2009-12-09))
Type of format archive file format
Extended from XML, gzip
Website //xar/p.com.googlecode

Xar (short for eXtensible ARchive format) is an open source file archiver and the archiver’s file format. It was created within the OpenDarwin project and is used in Mac OS X 10.5 for software installation routines, as well as browser extensions in Safari 5.0. Xar replaced the use of gzipped pax files.[1]

One development branch of RPM, RPM5, uses xar.[2]

/etc/magic

The following code snippet shows the magic number, in the /etc/magic format of the Unix file program:

#-------------------------------------------------------------
# file(1) magic(5) data for xar archive file format
0     string    xar!    xar - eXtensible ARchiver archive
>6    beshort   x       - version %d

References

  1. ^ Nabble – xar in Mac OS X
  2. ^ RPM 5 package manager

External links

  • Xar homepage
  • Why xar is interesting – Lists the advantages of xar.
  • Diagram of the data structure of a Xar file
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