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TP(1)									 TP(1)

NAME
       tp - manipulate tape archive

SYNOPSIS
       tp [ key ] [ name ... ]

DESCRIPTION
       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
	       directory.  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 extracted.

       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 desired.

       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 beginning.  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.   Normally,	 errors	 cause a return to the command
		 level.

       f	 Use the first named file, rather than a tape, as the archive.
		 This  option  currently  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.

FILES
       /dev/tap?
       /dev/rmt?

SEE ALSO
       ar(1), tar(1)

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

BUGS
       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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