files to or restores
files from an archive medium. An enhanced version of tar, gnutar is usually the preferred utility because gnutar can handle much longer pathnames than tar, and gnutar's default omission of the leading slash in pathnames allows archives to be more easily opened on other systems. Note that until native drivers for tape drives exist for Mac OS X, gnutar can't write to tape. Note also that gnutar doesn't preserve resource forks or HFS metadata when copying files that contain them.
gnutar is installed on Mac OS X as part of Apple's Xcode Tools.
You must use exactly one of these, and it must come before any other options:
Concatenate a second tar file onto the end of the first.
Create a new archive.
Compare the files stored in
other-files. Report any differences, such as missing files, different sizes, different file attributes (such as permissions or modification time).
other-files from the archive.
other-files to the end of an existing archive.
Print the names of
other-files if they are stored on the archive (if
other-files aren't specified, print names of all files).
Add files if not in the archive or if modified.
other-files from an archive (if
other-files aren't specified, extract all files).
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