UMOUNT.HLP -- UMOUNT VERSION 20(14)
JANUARY  1972

HANDLING COMMANDS FROM OTHER FILE STRUCTURES
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IF A FILE COMMAND IS ISSUED WITH A PARTICULAR FILE STRUCTURE MOUNTED,
THE DISK FILES REFERENCED (UNLESS ANOTHER STRUCTURE IS SPECIFIED
EXPLICITLY) WILL BE FROM THE MOUNTED FILE STRUCTURE. THE DIRECTORY FILE
IS WRITTEN TO THE MOUNTED FILE STRUCTURE.

HANDLING OF USER DIRECTORY FILES ON A REWRITE
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IF A DECTAPE DIRECTORY FILE IS REWRITTEN BY OMOUNT, ITS FILE PROTECTION
IS PRESERVED.  THE DIRECTORY FILE (IF PRESENT) IS DELETED JUST
BEFORE THE DECTAPE OPERATION.  THIS IS DONE SO THAT IF DIRECTORY
REWITE FAILS AT LEAST THE USER DOESN'T SEE THE SAME DIRECTORY
WITH NO ERROR MESSAGES.


MESSAGES TO USER
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1.  IF A WILDCARD FILENAME OR EXTENSION WAS USED TO REFERENCE FILES ON
    DECTAPE AND NO SUCH FILES WERE FOUND, THE USER WILL RECEIVE IN HIS
    DIRECTORY FILE.

     "?NO FILES FOR REQUEST - NAME.EXT"

2.  IF A USER REQUESTS A DECTAPE DURING OFF-HOURS AND THE TAPE IS NOT
    ALREADY MOUNTED, THE FOLLOWING MESSAGE IS WRITTEN INTO THE USER'S
    DECTAPE DIRECTORY FILE.

     "?SORRY, NO OPERATOR IS PRESENT"

3.  IF A USER REQUESTS A SCRATCH DECTAPE AND NONE ARE LEFT IN THE SYSTEM
    POOL, THE FOLLOWING MESSAGE IS WRITTEN IN THE DIRECTORY FILE.

     "?SORRY, NO SCRATCH TAPES ARE LEFT"

4.  "NO OPR. JOB FOR REQUESTS"

    MEANING: THIS MESSAGE APPEARS ON THE USER'S CONSOLE WHEN HE HAS JUST
    ISSUED A REQUEST AND THERE IS NO OMOUNT CUSP RUNNING TO SERVICE THE
    REQUEST.

5.  "?PLEASE SPECIFY FILENAMES"

    MEANING: THE USER FILE Z,1 COMMAND INCLUDED NO FILENAMES.

6.  "?PLEASE SPECIFY NEW FILENAMES"

    MEANING: THE FILE M COMMAND REQUIRES THAT A NEW FILENAME ON DECTAPE
    BE SPECIFIED AS IN:

     FILE M,999,FILE.NEW = FILE.OLD

7.  "?PLEASE INCLUDE A LOGICAL NAME"

    MEANING: THE MOUNT COMMAND INSISTS ON A LOGICAL NAME WHEN A PHYSICAL
    DEVICE IS SPECIFIED.
FILE W
---- -
THE FILE W COMMAND NOW WAITS NOT ONLY FOR COMMAND FILES PENDING FROM THE
SAME PROJECT-PROGRAMMER NUMBER, BUT ALSO FROM THE SAME JOB.

TAPE NUMBER ONE
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FILE Z,1 IS ILLEGAL. THE USER ERROR MESSAGE FROM UMOUNT IS:

     "?SYNTAX ERROR"

ALSO, ANY FILE REQUEST FOR TAPE NUMBER ONE (RESERVED FOR SCRATCH TAPE
SPECIFICATIONS) FOR FUNCTIONS OTHER THAN F OR Z IS ILLEGAL.

REJECTIONS OF CERTAIN LOGICAL NAMES BY UMOUNT
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IF A LOGICAL NAME IS SPECIFIED DURING A MOUNT COMMAND THAT IS THE SAME
AS A PHYSICAL SYSTEM DISK DEVICE NAME (OR ABBREVIATION!), UMOUNT WILL
COMPLAIN:

     "?ILLEGAL LOGICAL NAME-TRY ANOTHER"

ANOTHER SCRATCH TAPE SPECIFICATION
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IN ADDITION TO USING 1 TO SPECIFY A SCRATCH TAPE AS IN

         FILE F,1,FILE.EXT

THE USER MAY SIMPLY OMIT THE DECTAPES NUMBER FIELD AS IN

         FILE Z,,FILE1,FILE2.

FILE C WITH AN ARGUMENT
---- - ---- -- --------
FILE C,N MAY BE USED TO CHECK PENDING FILE REQUEST EVERY N SECONDS.
N MUST BE A DECIMAL NUMBER BETWEEN 1 AND 60 INCLUSIVE.

MULTI-LINE PLEASE
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MORE THAN ONE LINE MAY BE SENT TO THE OPERATOR BY TERMINATING THE LINE
WITH AN ALTMODE RATHER THAN CARRIAGE RETURN. THE USER MAY CONTINUE
TYPING IN THE NEXT LINE. THE TEXT IS TERMINATED BY CARRIAGE RETURN ON
THE LAST LINE. LEADING SPACES OR TABS ON EACH LINE ARE SUPPRESSED BY
OPSER BEFORE REACHING THE OPERATOR'S CONSOLE.
