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Tar 1.20

Item posted by Sergey Poznyakoff <gray> on Mon 14 Apr 2008 02:33:01 PM UTC.

GNU tar 1.20 is available for download from ftp://ftp.gnu.org/gnu/tar.

New in this version:


With --create, selects compression algorithm basing on the suffix of the archive file name.


Selects LZMA compression algorithm


During archive creation, dereferences hard links and stores the files they refer to, instead of creating usual hard link members (type '1').


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 documentation, section 3.8 "Checkpoints" for a complete description.


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.


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 documentation, section 6.7 "Modifying File and Member Names".


The value of the blocking factor is made available to info and
checkpoint scripts via environment variable TAR_BLOCKING_FACTOR.


Improved (sped up) extracting from incremental archives.


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