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TP(1)											    TP(1)

       tp - manipulate tape archive

       tp [ key ] [ name ... ]

       Tp  saves and restores files on DECtape or magtape.  Its actions are controlled by the key
       argument.  The key is a string of characters containing at most one  function  letter  and
       possibly  one  or  more	function  modifiers.   Other arguments to the command are file or
       directory names specifying which files are to be dumped,  restored,  or	listed.   In  all
       cases, appearance of a directory name refers to the files and (recursively) subdirectories
       of that directory.

       The function portion of the key is specified by one of the following letters:

       r       The named files are written on the tape.  If files with	the  same  names  already
	       exist,  they  are replaced.  `Same' is determined by string comparison, so `./abc'
	       can never be the same as `/usr/dmr/abc' even if `/usr/dmr' is the  current  direc-
	       tory.  If no file argument is given, `.' is the default.

       u       updates	the  tape.   u is like r, but a file is replaced only if its modification
	       date is later than the date stored on the tape; that is to say, if it has  changed
	       since it was dumped.  u is the default command if none is given.

       d       deletes	the named files from the tape.	At least one name argument must be given.
	       This function is not permitted on magtapes.

       x       extracts the named files from the tape to the file system.  The owner and mode are
	       restored.   If  no  file  argument  is  given, the entire contents of the tape are

       t       lists the names of the specified files.	If no file argument is given, the  entire
	       contents of the tape is listed.

       The  following characters may be used in addition to the letter which selects the function

       m	 Specifies magtape as opposed to DECtape.

       0,...,7	 This modifier selects the drive on which the tape is mounted.	For DECtape, x is
		 default; for magtape `0' is the default.

       v	 Normally  tp  does  its work silently.  The v (verbose) option causes it to type
		 the name of each file it treats preceded by the function  letter.   With  the	t
		 function, v gives more information about the tape entries than just the name.

       c	 means a fresh dump is being created; the tape directory is cleared before begin-
		 ning.	Usable only with r and u.  This option is assumed with magtape	since  it
		 is impossible to selectively overwrite magtape.

       i	 Errors  reading  and  writing	the tape are noted, but no action is taken.  Nor-
		 mally, errors cause a return to the command level.

       f	 Use the first named file, rather than a tape, as the archive.	This option  cur-
		 rently acts like m; i.e.  r implies c, and neither d nor u are permitted.

       w	 causes tp to pause before treating each file, type the indicative letter and the
		 file name (as with v) and await the user's response.  Response y means `yes', so
		 the  file is treated.	Null response means `no', and the file does not take part
		 in whatever is being done.  Response x means `exit'; the tp  command  terminates
		 immediately.	In  the  x  function,  files  previously  asked  about	have been
		 extracted already.  With r, u, and d no change has been made to the tape.


       ar(1), tar(1)

       Several; the non-obvious one is `Phase error', which means the file changed after  it  was
       selected for dumping but before it was dumped.

       A single file with several links to it is treated like several files.

       Binary-coded  control information makes magnetic tapes written by tp difficult to carry to
       other machines; tar(1) avoids the problem.

7th Edition				  April 29, 1985				    TP(1)
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