Use portable file and member names. A name is portable if it contains
only ASCII letters and digits, ‘/’, ‘.’, ‘_’, and
‘-’; it cannot be empty, start with ‘-’ or ‘//’, or
contain ‘/-’. Avoid deep directory nesting. For portability to
old Unix hosts, limit your file name components to 14 characters or
less.
If you intend to have your tar archives to be read under
MSDOS, you should not rely on case distinction for file names, and you
might use the GNU doschk program for helping you
further diagnosing illegal MSDOS names, which are even more limited
than System V's.
Published under the terms of the GNU General Public License