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[ANNOUNCEMENT] Updated: tar-1.20-1


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A new release of tar, 1.20-1, is available, replacing 1.19.90-1 as the
current version, and leaving 1.19-1 as previous.

NEWS:
=====
This is a new stable upstream release.  It finalizes the 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-1.20/.

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 1.20 - Sergey Poznyakoff, 2008-04-14

* 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.

* New options --no-check-device, --check-device.

The `--no-check-device' option disables comparing device numbers during
preparatory stage of an incremental dump.  This allows to avoid
creating full dumps if the device numbers change (e.g. when using an
LVM snapshot).

The `--check-device' option enables comparing device numbers.  This is
the default.  This option is provided to undo the effect of the previous
`--no-check-device' option, e.g. if it was set in TAR_OPTIONS
environment variable.

* 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.

* Incremental archives

Improved (sped up) extracting from incremental archives.

* Bugfixes.
** Fix bug introduced in version 1.19: tar refused to update non-existing
archives.

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