Mail Archives: cygwin/2008/02/28/23:48:28
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A new release of tar, 1.19.90-1, is available, replacing 1.19-1 as the
current version.
NEWS:
=====
This is a new upstream release. It is marked beta upstream, but fixes
several bugs, and adds a new --lzma feature that can be used to achieve
better compression ratios if you also install lzma. This release requires
cygwin-1.5.25 or later. See also the upstream documentation in
/usr/share/doc/tar-1.19.90/.
DESCRIPTION:
============
GNU Tar is an archiver program. It is used to create and manipulate files
that are actually collections of many other files; the program provides
users with an organized and systematic method of controlling a large
amount of data. Despite its name, that is an acronym of "tape archiver",
GNU Tar is able to direct its output to any available devices, files or
other programs, it may as well access remote devices or files. The main
areas of usage for GNU Tar are: storage, backup and transportation.
UPDATE:
=======
To update your installation, click on the "Install Cygwin now" link on the
http://cygwin.com/ web page. This downloads setup.exe to your system.
Save it and run setup, answer the questions and pick up 'tar' from the
'Base' category (it should already be selected).
DOWNLOAD:
=========
Note that downloads from sources.redhat.com (aka cygwin.com) aren't
allowed due to bandwidth limitations. This means that you will need to
find a mirror which has this update, please choose the one nearest to you:
http://cygwin.com/mirrors.html
QUESTIONS:
==========
If you want to make a point or ask a question the Cygwin mailing list is
the appropriate place.
- --
Eric Blake
volunteer cygwin tar maintainer
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version 1.19.90 (CVS)
* New option --auto-compress (-a)
With --create, selects compression algorithm basing on the suffix
of the archive file name.
* New option --lzma
Selects LZMA compression algorithm
* New option --hard-dereference
During archive creation, dereferences hard links and stores the files
they refer to, instead of creating usual hard link members (type '1').
* New option --checkpoint-action
This action allows to specify an action to be executed upon hitting a
checkpoint. Recognized actions are: dot, echo (the default),
echo=string, ttyout=string, exec=cmdline, and sleep=value. Any number
of `--checkpoint-action' options can be specified, the actions will be
executed in order of their appearance in the command line. See
chapter 3.8 "Checkpoints" for a complete description.
* The --transform option.
Any number of `--transform' options can be given in the command line.
The specified transformations will be applied in turn.
The argument to `--transform' option can be a list of replace
expressions, separated by a semicolon (as in `sed').
Filename transformations are applied to symbolic link targets
during both creation and extraction. Tar 1.19 used them only
during extraction.
For a detailed description, see chapter 6.7 "Modifying File and Member
Names".
* Info (end-of-volume) scripts
The value of the blocking factor is made available to info and
checkpoint scripts via environment variable TAR_BLOCKING_FACTOR.
* Bugfixes.
** Fix bug introduced in version 1.19: tar refused to update non-existing
archives.
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