Format parameters specify how an archive is written on the archive
media. The best choice of format parameters will vary depending on
the type and number of files being archived, and on the media used to
store the archive.
To specify format parameters when accessing or creating an archive,
you can use the options described in the following sections.
If you do not specify any format parameters, tar uses
default parameters. You cannot modify a compressed archive.
If you create an archive with the --blocking-factor option
specified (see Blocking Factor), you must specify that
blocking-factor when operating on the archive. See Formats, for other
examples of format parameter considerations.
Published under the terms of the GNU General Public License
