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                                EXEC DOC FILE


                                  May, 1984


                                Version 6(777)










COPYRIGHT  (C)   1976,1978,1979,1980,1982,1983,1984   BY   DIGITAL   EQUIPMENT
CORPORATION,  MAYNARD,  MASS.   THE  SOFTWARE  DESCRIBED  IN  THIS DOCUMENT IS
FURNISHED UNDER A LICENSE AND MAY BE USED AND COPIED ONLY IN  ACCORDANCE  WITH
THE  TERMS  OF  SUCH  LICENSE  AND  WITH  THE INCLUSION OF THE ABOVE COPYRIGHT
NOTICE.  THIS SOFTWARE OR ANY OTHER COPIES THEREOF  MAY  NOT  BE  PROVIDED  OR
OTHERWISE  MADE  AVAILABLE  TO ANY OTHER PERSON.  NO TITLE TO AND OWNERSHIP OF
THE SOFTWARE IS HEREBY TRANSFERRED.

THE INFORMATION IN THIS DOCUMENT IS  SUBJECT  TO  CHANGE  WITHOUT  NOTICE  AND
SHOULD NOT BE CONSTRUED AS A COMMITMENT BY DIGITAL EQUIPMENT CORPORATION.

DIGITAL ASSUMES NO RESPONSIBILITY FOR THE USE OR RELIABILITY OF  ITS  SOFTWARE
ON EQUIPMENT WHICH IS NOT SUPPLIED BY DIGITAL.
                                                                        Page 2


This document provides a brief summary of the new and changed commands in  the
v6 EXEC.



                   TOPS-20 RELEASE 6.0 EXEC ENHANCEMENTS

New Commands (Not including multiforking-class commands)
--------------------------------------------------------

PERUSE
SEND


New Arguments, Subcommands, and Switches
----------------------------------------

Command         Argument, Subcommand, or Switch
-------         -------------------------------

BUILD           PRESERVE,
                TOPS10-PROJECT-PROGRAMMER-NUMBER

LOAD-class      /10-BLISS, /36BLISS, /ABORT, /FAIL, /[NO]FLAG-NON-STANDARD,
                /[NO]MACHINE-CODE, /PASCAL, /SAIL, /SNOBOL, /[NO]WARNINGS

DDT             /OVERLAY

DIRECTORY       COMPLETE

INFO DECNET     node-name

INFO MAIL       SYSTEM

LOGIN           /FAST

MERGE           /OVERLAY

RECEIVE/REFUSE  USER-MESSAGES

SET MAIL        Notification-count

SET [NO] TRAP JSYS
                /DEFINED, /UNDEFINED

TERMINAL        [NO]INHIBIT


New Multiforking-class Commands
-------------------------------

ERUN
FREEZE
KEEP
UNKEEP
                                                                        Page 3




Multiforking Arguments and Switches Added to Existing Commands
--------------------------------------------------------------

Command         Argument or Switch
-------         ------------------

CONTINUE        fork-name, fork-number, /BACKGROUND, /NORMALLY, /STAY

FORK            fork-name

INFORMATION     FORK-STATUS

INFORMATION
 DEFAULT        PROGRAM

RESET           (*), (.), fork name, fork number

                        { [NO-]EPHEMERAL
SET DEFAULT     PROGRAM { KEEP
                        { NONE

SET FILE        [NO] EPHEMERAL

SET             NAME

                        { [NO-]EPHEMERAL
SET             PROGRAM { KEEP
                        { NONE

START           /BACKGROUND, /NORMALLY, /STAY


Miscellaneous EXEC Enhancements
-------------------------------

Command         Enhancement
-------         ----------

BUILD           Square brackets legal in directory names
                Forty directory group numbers allowed in a directory

INFO LOGICAL-NAMES
                Accepts wildcards in logical name

LOGIN           Displays date and time of last LOGIN

SET DIRECTORY PASSWORD
                Old Password Not Requested

PUSH            Runs the EXEC defined by the system logical name
                DEFAULT-EXEC:
                                                                        Page 4


New Fields Displayed by INFORMATION Commands
--------------------------------------------

INFORMATION
Argument        New Field
--------        ---------

PROGRAM         SET PROGRAM and SET DEFAULT PROGRAM settings

SYSTEM-STATUS   Sending of level zero and level one messages to all users
                and BUGCHK messages to console terminal.

TERMINAL        TERMINAL INHIBIT and SYSTEM-MESSAGES status

VERSION         Decimal version numbers

DIRECTORY       Password not displayed
                TOPS-10 project-programmer number

SYSTEM          DECnet terminals allowed/disallowed

ARPANET         New fields in display


^E Privileged Command Enhancements
----------------------------------

Command         New Subcommand, Argument or Feature
-------         -----------------------------------

^ECEASE         NOW
                Displays shutdown time and ARPANET or DECnet node name before
                requiring an extra confirm.

^ECREATE        PRESERVE
                TOPS10-PROJECT-PROGRAMMER-NUMBER nn,nn

                Square brackets legal in directory names
                Forty directory group numbers allowed in a directory

^EPRINT         Password not displayed

^SET            [NO] FAST-LOGINS-ALLOWED
                [NO] LEVEL-ONE-MESSAGES
                [NO] LEVEL-ZERO-MESSAGES
                [NO] WORKING-SET-PRELOADING