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GNU Tar Changelog

What's new in GNU Tar 1.23

Sep 2, 2010
  • NEWS: Update.
  • THANKS: Update.
  • doc/snapshot.texi, doc/snapshot.texi,
  • doc/sparse.texi, doc/tar-snapshot-edit.texi,
  • doc/tar.texi: Spellchecked and proof-read. Thanks
  • to Denis Excoffier.
  • gnulib.modules: Remove utime.

New in GNU Tar 1.22 (Mar 25, 2009)

  • Support for xz compression (--xz option)
  • Short option -J is reassigned as a shortcut for --xz
  • The option -I is a shortcut for --use-compress-program
  • The --no-recursive option works with --incremental

New in GNU Tar 1.21 (Feb 12, 2009)

  • New short option -J, an alias for --lzma
  • New option --lzop
  • New option --no-auto-compress
  • New option --no-null
  • Bugfixes:
  • The --null option disabled handling of tar options in list files. This is fixed.
  • Fixed record size autodetection. If detected record size differs from the expected value (either default, or set on the command line), tar prints a warning if verbosity level is set to 1 or greater, i.e. if either -t or -v option is given.

New in GNU Tar 1.20 (Dec 4, 2008)

  • 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 section 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.
  • 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.
  • 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.