PAXTAR(1)                 BSD General Commands Manual                PAXTAR(1)

     paxtar -- tape archiver

     paxtar {crtux}[014578AabefHhJjLmNOoPpqsvwXZz]
            [blocking-factor | archive | replstr] [-C directory] [-I file]
            [file ...]
     paxtar {-crtux} [-014578AaeHhJjLmNOoPpqvwXZz] [-b blocking-factor]
            [-C directory] [-f archive] [-I file] [-M flag] [-s replstr]
            [file ...]

     The paxtar command creates, adds files to, or extracts files from an ar-
     chive file in "tar" format.  A tar archive is often stored on a magnetic
     tape, but can be stored equally well on a floppy, CD-ROM, or in a regular
     disk file.

     In the first (legacy) form, all option flags except for -C and -I must be
     contained within the first argument to paxtar and must not be prefixed by
     a hyphen ('-').  Option arguments, if any, are processed as subsequent
     arguments to paxtar and are processed in the order in which their corre-
     sponding option flags have been presented on the command line.

     In the second and preferred form, option flags may be given in any order
     and are immediately followed by their corresponding option argument val-

     One of the following flags must be present:

     -c      Create new archive, or overwrite an existing archive, adding the
             specified files to it.

     -r      Append the named new files to existing archive.  Note that this
             will only work on media on which an end-of-file mark can be over-

     -t      List contents of archive.  If any files are named on the command
             line, only those files will be listed.  The file arguments may be
             specified as glob patterns (see glob(7) for more information), in
             which case paxtar will list all archive members that match each

     -u      Alias for -r.

     -x      Extract files from archive.  If any files are named on the com-
             mand line, only those files will be extracted from the archive.
             The file arguments may be specified as glob patterns (see glob(7)
             for more information), in which case paxtar will extract all ar-
             chive members that match each pattern.

             If more than one copy of a file exists in the archive, later
             copies will overwrite earlier copies during extraction.  The file
             mode and modification time are preserved if possible.  The file
             mode is subject to modification by the umask(2).

     In addition to the flags mentioned above, any of the following flags may
     be used:

     -A      Write Unix Archiver libraries instead of tape archives.

     -a      Guess the compression utility based on the archive filename.  In-
             ability to guess will result in quietly not using any compres-
             sion.  This option only exists for semi-compatibility with GNU
             tar; it is strongly recommended to archive to stdout and pipe
             into an external compression utility with appropriate arguments

                   tar -cf - foo | xz -2e >foo.txz

     -b blocking-factor
             Set blocking factor to use for the archive.  paxtar uses 512-byte
             blocks.  The default is 20, the maximum is 126.  Archives with a
             blocking factor larger than 63 violate the POSIX standard and
             will not be portable to all systems.

     -C directory
             This is a positional argument which sets the working directory
             for the following files.  When extracting, files will be ex-
             tracted into the specified directory; when creating, the speci-
             fied files will be matched from the directory.

     -e      Stop after the first error.

     -f archive
             Filename where the archive is stored.  Defaults to /dev/rst0.  If
             set to hyphen ('-') standard output is used.  See also the TAPE
             environment variable.

     -H      Follow symlinks given on the command line only.

     -h      Follow symbolic links as if they were normal files or directo-
             ries.  In extract mode this means that a directory entry in the
             archive will not overwrite an existing symbolic link, but rather
             what the link ultimately points to.

     -I file
             This is a positional argument which reads the names of files to
             archive or extract from the given file, one per line.

     -J      Use the xz utility to compress the archive.

     -j      Use the bzip2 utility to compress the archive.

     -L      Synonym for the -h option.

     -M flag
             Configure the archive normaliser.  flag is either a numeric value
             compatible to strtonum(3) which is directly stored in the flags
             word, or one of the following values, optionally prefixed with
             "no-" to turn them off:

             inodes  0x0001: Serialise inodes, zero device info.
                     (cpio, sv4cpio, sv4crc)
             links   0x0002: Store content of hard links only once.
                     (cpio, sv4cpio, sv4crc)
             mtime   0x0004: Zero out the file modification time.
                     (ar, cpio, sv4cpio, sv4crc, ustar)
             uidgid  0x0008: Set owner to 0:0 (root:wheel).
                     (ar, cpio, sv4cpio, sv4crc, ustar)
             verb    0x0010: Debug this option.
             debug   0x0020: Debug file header storage.
             lncp    0x0040: Extract hard links by copy if link fails.
             numid   0x0080: Use only numeric uid and gid values.
             gslash  0x0100: Append a slash after directory names.
             set     0x0003: Keep ownership and mtime intact.
             dist    0x008B: Clean everything except mtime.
             norm    0x008F: Clean everything.
             root    0x0089: Clean owner and device information.

             When creating an archive and verbosely listing output, these nor-
             malisation operations are not reflected in the output, because
             they are made only after the output has been shown.

             This option is only implemented for the ar, cpio, sv4cpio,
             sv4crc, and ustar file format writing routines.

     -m      Do not preserve modification time.

     -N      Same as -M numid.

     -O      If reading, extract files to standard output.
             If writing, write old-style (non-POSIX) archives.

     -o      If writing, write old-style (non-POSIX) archives.  Don't write
             directory information that the older (V7) style tar is unable to

     -P      For security reasons, paxtar skips pathnames containing dotdot
             ("..") components and strips leading slashes ('/') from pathnames
             by default; this option disables that behaviour.

     -p      Preserve user and group ID as well as file mode regardless of the
             current umask(2).  The setuid and setgid bits are only preserved
             if the user and group ID could be preserved.  Only meaningful in
             conjunction with the -x flag.

     -q      Select the first archive member that matches each file operand.
             No more than one archive member is matched for each file.  When
             members of type directory are matched, the file hierarchy rooted
             at that directory is also matched.

     -s replstr
             Modify the archive member names according to the substitution ex-
             pression replstr, using the syntax of the ed(1) utility regular
             expressions.  file arguments may be given to restrict the list of
             archive members to those specified.

             The format of these regular expressions is


             As in ed(1), old is a basic regular expression (see re_format(7))
             and new can contain an ampersand ('&'), '\n' (where n is a digit)
             back-references, or subexpression matching.  The old string may
             also contain newline characters.  Any non-null character can be
             used as a delimiter ('/' is shown here).  Multiple -s expressions
             can be specified.  The expressions are applied in the order they
             are specified on the command line, terminating with the first
             successful substitution.

             The optional trailing g continues to apply the substitution ex-
             pression to the pathname substring, which starts with the first
             character following the end of the last successful substitution.
             The first unsuccessful substitution stops the operation of the g
             option.  The optional trailing p will cause the final result of a
             successful substitution to be written to standard error in the
             following format:

                   original-pathname >> new-pathname

             File or archive member names that substitute to the empty string
             are not selected and will be skipped.

     -v      Verbose operation mode.  If -v is specified multiple times or if
             the -t option is also specified, paxtar will use a long format
             for listing files, similar to ls(1) -l.

     -w      Interactively rename files.  This option causes paxtar to prompt
             the user for the filename to use when storing or extracting files
             in an archive.

     -X      Do not cross mount points in the filesystem.

     -Z      Use the compress(1) utility to compress the archive.

     -z      Use the gzip(1) utility to compress the archive.

     The options [-014578] can be used to select one of the compiled-in backup
     devices, /dev/rstN.

     TMPDIR      Path in which to store temporary files.

     TAPE        Default tape device to use instead of /dev/rst0.  If set to
                 hyphen ('-') standard output is used.

     /dev/rst0  default archive name

     The paxtar utility exits with one of the following values:

           0       All files were processed successfully.
           1       An error occurred.

     Create an archive on the default tape drive, containing the files named
     bonvole and sekve:

           $ paxtar c bonvole sekve

     Output a gzip(1) compressed archive containing the files bonvole and
     sekve to a file called foriru.tar.gz:

           $ paxtar zcf foriru.tar.gz bonvole sekve

     Verbosely create an archive, called backup.tar.gz, of all files matching
     the shell glob(7) function *.c:

           $ paxtar zcvf backup.tar.gz *.c

     Verbosely list, but do not extract, all files ending in .jpeg from a com-
     pressed archive named backup.tar.gz.  Note that the glob pattern has been
     quoted to avoid expansion by the shell:

           $ paxtar tvzf backup.tar.gz '*.jpeg'

     For more detailed examples, see pax(1).

     Whenever paxtar cannot create a file or a link when extracting an archive
     or cannot find a file while writing an archive, or cannot preserve the
     user ID, group ID, file mode, or access and modification times when the
     -p option is specified, a diagnostic message is written to standard error
     and a non-zero exit value will be returned, but processing will continue.
     In the case where paxtar cannot create a link to a file, unless -M lncp
     is given, paxtar will not create a second copy of the file.

     If the extraction of a file from an archive is prematurely terminated by
     a signal or error, paxtar may have only partially extracted the file the
     user wanted.  Additionally, the file modes of extracted files and direc-
     tories may have incorrect file bits, and the modification and access
     times may be wrong.

     If the creation of an archive is prematurely terminated by a signal or
     error, paxtar may have only partially created the archive, which may vio-
     late the specific archive format specification.

     ar(1), cpio(1), pax(1), paxcpio(1), tar(1), deb(5)

     A tar command first appeared in Version 7 AT&T UNIX.

     Keith Muller at the University of California, San Diego.  MirBSD exten-
     sions by mirabilos <>.

     The flags -AaJjLMNo are not portable to other implementations of tar
     where they may have a different meaning or not exist at all.  This imple-
     mentation may have support for other non-standard options that are undoc-
     umented because removal-inducing deprecation was issued.  There is no op-
     tion to select a different output format from ustar or tar except -A,
     which selects ar; use the paxcpio(1) or pax(1) front-ends for that.

     The pax file format is not yet supported.

MirBSD                         February 24, 2019                        MirBSD
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