system/xar: Added (eXtensible ARchiver)

Signed-off-by: Willy Sudiarto Raharjo <willysr@slackbuilds.org>

1 files changed, 21 insertions, 0 deletions

diff --git a/system/xar/README b/system/xar/README
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+xar (eXtensible ARchiver)
+
+The XAR project aims to provide an easily extensible archive
+format. Important design decisions include an easily extensible XML
+table of contents (TOC) for random access to archived files, storing
+the TOC at the beginning of the archive to allow for efficient
+handling of streamed archives, the ability to handle files of
+arbitrarily large sizes, the ability to choose independent encodings
+for individual files in the archive, the ability to store checksums
+for individual files in both compressed and uncompressed form, and the
+ability to query the table of content's rich meta-data.
+
+xar is used primarily for software install packages (.pkg files) for
+macOS X.
+
+To actually extract a .pkg file, do something like:
+
+$ xar -x -f filename.pkg
+$ zcat base.pkg/Payload | cpio -iv
+
+You'll end up with Applications/ Library/ Resources/, etc.