06/12/87  list_tape_contents, ltc

Syntax: list_tape_contents {-long} {-label}, ltc {-lg} {-lbl}


Function:  displays information about each record on the tape.
The tape is positioned to BOT and each record is read in.  If
the tape is one of the five known standard types, the current
record is inspected to determine if it is a valid label or
trailer record; if so, information pertinent to that particular
label or trailer record is displayed, in interpreted format.


Control arguments:
-long, -lg
   The contents of the label record is displayed (in ASCII) as
   well.  Otherwise, the length of the current record is
   compared to the length of the last record read.  If the
   lengths are the same, a tally of the number of records with
   the same length is incremented.  If the length of the
   current record is different from that of the last record,
   or if an end of file mark is detected, a message is
   displayed that includes:  the number of records of equal
   length, and the record length in bits, words, 8-bit bytes,
   9-bit bytes, and 6-bit characters.


-label, -lbl
   only displays the label records.  This operation continues
   until the logical end of tape is reached (two end of file
   marks in succession or an end of volume trailer record,
   followed by an end of file mark).  The tape is repositioned
   to BOT after the list_tape_contents request is complete.
   Use of the -label argument with unlabeled tapes is treated
   as an error.



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Historical Background

This edition of the Multics software materials and documentation is provided and donated
to Massachusetts Institute of Technology by Group BULL including BULL HN Information Systems Inc. 
as a contribution to computer science knowledge.  
This donation is made also to give evidence of the common contributions of Massachusetts Institute of Technology,
Bell Laboratories, General Electric, Honeywell Information Systems Inc., Honeywell BULL Inc., Groupe BULL
and BULL HN Information Systems Inc. to the development of this operating system. 
Multics development was initiated by Massachusetts Institute of Technology Project MAC (1963-1970),
renamed the MIT Laboratory for Computer Science and Artificial Intelligence in the mid 1970s, under the leadership
of Professor Fernando Jose Corbato. Users consider that Multics provided the best software architecture 
for managing computer hardware properly and for executing programs. Many subsequent operating systems 
incorporated Multics principles.
Multics was distributed in 1975 to 2000 by Group Bull in Europe , and in the U.S. by Bull HN Information Systems Inc., 
as successor in interest by change in name only to Honeywell Bull Inc. and Honeywell Information Systems Inc. .

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Permission to use, copy, modify, and distribute these programs and their documentation for any purpose and without
fee is hereby granted,provided that the below copyright notice and historical background appear in all copies
and that both the copyright notice and historical background and this permission notice appear in supporting
documentation, and that the names of MIT, HIS, BULL or BULL HN not be used in advertising or publicity pertaining
to distribution of the programs without specific prior written permission.
    Copyright 1972 by Massachusetts Institute of Technology and Honeywell Information Systems Inc.
    Copyright 2006 by BULL HN Information Systems Inc.
    Copyright 2006 by Bull SAS
    All Rights Reserved