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(tar.info)Same Order

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Same Order
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`--same-order'
`--preserve-order'
`-s'
     To process large lists of file names on machines with small
     amounts of memory.  Use in conjunction with `--compare' (`--diff',
     `-d'), `--list' (`-t') or `--extract' (`--get', `-x').

   The `--same-order' (`--preserve-order', `-s') option tells `tar'
that the list of file names to be listed or extracted is sorted in the
same order as the files in the archive.  This allows a large list of
names to be used, even on a small machine that would not otherwise be
able to hold all the names in memory at the same time.  Such a sorted
list can easily be created by running `tar -t' on the archive and
editing its output.

   This option is probably never needed on modern computer systems.