# 2.11BSD#431 - /usr/man/cat1/tp.0

    TP(1)		    UNIX Programmer's Manual		    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 argu-
         ments 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 com-
    	     parison, 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

    Printed 11/26/99	 April 29, 1985                         1

    TP(1)		    UNIX Programmer's Manual		    TP(1)

    	       is mounted.  For DECtape, x is default; for
    	       magtape `0' is the default.

         v	       Normally tp does its work silently.  The v (ver-
    	       bose) 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 permit-
    	       ted.

         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.

    Printed 11/26/99	 April 29, 1985                         2

    TP(1)		    UNIX Programmer's Manual		    TP(1)

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

    Printed 11/26/99	 April 29, 1985                         3

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