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C00002 00002 This writeup is taken from the Monitor Command Manual, which appears online
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This writeup is taken from the Monitor Command Manual, which appears online
as MONCOM.BH[S,DOC]. This is Section 5.1 of that manual.
The LOGIN command is used to begin a session of using the computer. It runs
the LOGIN program, which provides several optional services as well as
setting up the necessary system tables for your job.
The LOGIN command may be abbreviated L. It takes one argument, a
project-programmer name. Different characters used between the two parts of
the name are used for different options:
PRJ,PRG types all system messages and processes OPTION.TXT (see below)
PRJ/PRG types system messages new since last login, processes
OPTION.TXT
PRJ.PRG types no messages, ignores OPTION.TXT; for fast login
PRJ%PRG sets new password, as explained below, then acts like PRJ,PRG
Project 1 is the default project, and "/" is the default delimiter. Hence,
"L FOO" is the same as "L 1/FOO" and "L .FOO" is the same as "L 1.FOO".
System messages are notices for all users, sent by the MAIL * command and
stored in the file NOTICE.TXT[2,2]. There may also be messages addressed
specifically to you. The handling of your personal mail is explained below.
It is possible to set a password and file protection codes to restrict
access to a particular PPN. If the PPN you specify to LOGIN has a password,
LOGIN types Password= and you must type the correct password to log in.
Echoing of input characters is turned off so the password does not print.
Passwords may be one to six letters or digits followed by RETURN. To
protect files from unauthorized access, there is a protection code
associated with each file. The code specifies the access allowed to the
file for its owner (i.e., a user logged in under the file's PPN), for other
authorized AI Lab users, and for guest users who are logged in remotely
(from the ARPA network, dial-up telephone lines, or campus terminals). You
can set the protection code for a file using the COPY program (see Appendix
2). However, you must use the LOGIN program to set the protection code of
your file directory itself, and the default protection code which is
assigned to new files created in your directory if the program writing the
file does not specify a value explicitly. If you use % as the delimiter
between the project and programmer names when you log in, LOGIN will give
you the opportunity to change your password, the file directory protection,
and the default protection for new files. The protection codes are entered
as three-digit octal numbers, with the following meanings:
Bit Meaning in directory protection code
400 password is for remote logins only (see below)
200 unused
100 owner may not write files
040 local users may not change protection of files
020 local users may not read directory or any files
010 local users may not write any files
004 guest users may not change protection of files
002 guest users may not read directory or any files
001 guest users may not write any files
Bit Meaning in file protection code
400 don't dump this file (see DART, Appendix 5)
200 delete protect (see COPY, Appendix 2)
100 owner may not overwrite this file
040 local users may not change protection of this file
020 local users may not read this file
010 local users may not overwrite this file
004 guest users may not change protection of this file
002 guest users may not read this file
001 guest users may not overwrite this file
If the 400 bit is on in the protection code for a file directory, the
password associated with that area is used only for logins from a remote
site; no password will be required for local login on that PPN. Except for
the special NET,GUE guest account*, remote login is not allowed on a PPN
which does not have a password; thus, if you want to be able to log in
remotely but do not want to have to type a password for local login, you can
set the 400 bit in your directory's protection code.
Users with access to local terminals who sometimes need to log in remotely
can set a password (with %) for their own PPNs; remote users who want to
establish accounts here should communicate with Lester Earnest. (Type the
command MAIL LES.)
Sometimes you may find the system is in maintenance mode, which means that
the monitor is being debugged and the system is not available for normal
use. If you try to log in at such a time you will be asked for the
maintenance password.
The further details of LOGIN's operation are controlled by a file named
OPTION.TXT which you may have in your directory. If there is one, it is
searched for a line of the form
LOGIN:opt1,opt2,opt3;comments
where opt1...optn are the desired options. Spaces may be used in the
obvious places. Only the first six letters of an option name are read.
Upper or lower case is ok. Several other programs use this OPTION.TXT file,
looking for their own option lines.
The LOGIN options are as follows:
XMAIL Inhibits mail notification if you were the last person to write
your mail file.
XDIGEST Always type the AP News digest, regardless of whether or not
you have NOMAIL set.
NONOTE Never type out system notices, no matter what delimiter you
used when logging in. This is for people who have secondary
areas that they log in on and want OPTION.TXT files executed
but don't want to get system messages.
SYSTAT Type out the number of jobs logged in and how many running at
that instant.
NOMAIL Does not ask any questions about message files. This is for
people who like to type ahead while LOGIN is running. The
exact effect depends on what other options are used; see below.
MESSAG Types your mail without asking; see below.
GRIPE Types out new gripes just like new system messages.
RUN=xxx Where xxx is a file specification, runs the specified program.
The device defaults to SYS:. This takes precedence over all
run-type options.
LOGRUN Runs the LOGRUN program, which executes monitor commands from a
LOGRUN entry in OPTION.TXT; see below for details. This is the
same thing as RUN=LOGRUN.
INIT Runs the file INIT.DMP in your directory after login. Doesn't
work if you also have LOGRUN. This is like RUN=DSK:INIT.
BEEP If you are at a display, enables the system feature of
automatic beeping whenever your job finishes doing something
that took more than 15 seconds of real time. Like ESC Z.
WHO If you are at a display, starts a WHO line. Like ESC W.
AUDIO=n Selects audio switch input channel n to your speaker if you are
at a display terminal. "n" is an octal number. "AUDIO=-n"
inhibits telephone paging interrupts, like BREAK n U.
DM If you are not on a III or DD display, tells the system that
you are on a Datamedia (DM) display.
DM=n Just like DM option except that this specifies that your DM has
n lines (useful mostly on DM-simulating displays that provide
some number of display lines other than 24).
FDM Just like DM option if you are on a high-speed dialup line.
Ignored otherwise.
FDM=n Just like DM=n option if you are on a high-speed dialup line.
Ignored otherwise.
DM128 Like DM option but also tells the system that your DM can
display the control characters (octal 1 to 37) when they are
output preceded by an ascii escape character (octal 33).
DM128=n Like DM=n and DM128 options combined.
FDM128 Just like DM128 if you are on a high-speed dialup line.
Ignored otherwise.
FDM128=n Just like DM128=n if you are on a high-speed dialup line.
Ignored otherwise.
BOLD If you are on a DM display, tells the system to display your
line editor in boldface, assuming your DM has bold and blinking
interchanged like all SU-AI DMs. This is the default for DMs.
NOBOLD If you are on a DM display, tells the system not to display
your line editor in boldface/blinking (especially useful if
your DM does not have bold and blinking interchanged). This
option should occur after the DM or DM128 option, if present.
BS If you are on a DM display, tells the system that your DM
displays the 177 character.
NOBS If you are on a DM display, tells the system that your DM
does not display the 177 character. If you are in DM128
mode, the system will precede output of each 177 with an
033 to force the 177 to print. Otherwise, the system will
convert echo or output of backspace (177) to appear as a
bold left-arrow.
PORNO Try it and see. Doesn't work if you also have LOGRUN or INIT.
DIGEST Tells you if there is a new Associated Press news digest that
came in after the last time you logged in and asks you if it
should type it out.
QMAINT Only type maintenance forecast if it has changed since last
login. Otherwise the maintenance forecast is always typed
unless . is used as the PPN delimiter.
ME Tells you your fortune.
COOKIE Alternate fortune cookie selection. See which you prefer.
HIDE Makes your Data Disc channel private, like ESC H.
UNHIDE Makes your Data Disc channel public, like BREAK H.
WIDTH=n If you are at a Teletype, sets the maximum number of columns
for TTY output to the decimal value n, which should be between
16 and 256. Like TTY WIDTH n.
FULL If you are at a Teletype, sets the full character set mode
switch. Like TTY FULL.
NOFULL If you are at a Teletype, clears the full character set mode
switch. Like TTY NO FULL.
TABS If you are at a Teletype, clears the tab expand bit; tabs will
not be converted to spaces on output. Like TTY TABS.
NOTABS If you are at a Teletype, sets the tab expand bit; tabs will be
converted to spaces on output. Like TTY NO TABS.
FILL If you are at a Teletype, sets the fill switch to insert extra
carriage returns on output to give the carriage time to get all
the way back. Like TTY FILL.
NOFILL If you are at a Teletype, clears the fill switch thus
suppressing insertion of extra carriage returns on output.
Like TTY NO FILL.
ECHO If you are at a Teletype, tells the monitor to send back to
your terminal the characters you type. Like TTY ECHO.
NOECHO If you are at a Teletype, tells the monitor not to send back to
your terminal the characters you type. Like TTY NO ECHO.
ARROW If you are at a Teletype, tells the monitor to type out
characters below octal 40 as uparrow-letter (e.g., āA) rather
than the character itself except for BEL (7), TAB (11), LF
(12), VT (13), FF (14), and CR (15). Like TTY ARROW.
NOARROW If you are at a Teletype, tells the monitor to type out
characters below octal 40 as themselves instead of as uparrow
characters. Like TTY NO ARROW.
If there is a message addressed to you, LOGIN normally types
Message for YOU last written by PRG using PROGRM on dd-mon-yy at hhmm
Read it now?
where YOU is your programmer name, PRG is the programmer name of the last
user to write anything in your message file, PROGRM is the name of the
program used to do it, and dd-mon-yy and hhmm are the date and time it was
done.
If you type Y, the message file is printed, and you are allowed to delete it
(the whole file). If you type N, the message file is not printed. You can
also type R, which will treat your mail file like a system message file;
i.e., header lines will not be typed, and, if you used a slash in the
command, the only messages typed will be those which came since you last
logged in. However, R may not find the recently received messages correctly
if your mail file is in E format. If you type R, LOGIN does not ask if you
want to delete the file.
If you have the MESSAG option but not the NOMAIL option, then personal mail
is always typed out without asking first. If you have both MESSAG and
NOMAIL, the mail is typed but you are not given the chance to delete it. If
you have NOMAIL alone, you get the Message for YOU... line but not the mail
itself; many people use the NOMAIL option for LOGIN and run other programs
to read their mail. See the file E.ALS[UP,DOC] on the use of E as a good
way to process your mail; remote users may prefer to use RCV--see page 105.
If you have DIGEST and NOMAIL, you are notified of a new A.P. digest but it
is not typed out. (RCV will also do this for you.) It is also possible to
get automatic notification of incoming news stories on particular topics
from the NS program; these messages are treated like personal mail with
respect to MESSAG and NOMAIL.
The LOGRUN program looks for a line in your OPTION.TXT file starting with
LOGRUN:. It then takes that line, and all following lines until a semicolon
is seen, and makes them be executed as if you typed them in. (The semicolon
is required.)
------
* At the present time the NET,GUE account has been discontinued, because it
was using too much computer time. People who are not authorized users
cannot log in remotely. A few monitor commands are allowed without login,
as mentioned in the individual command descriptions. The special guest
account capability still exists, however, as does the file protection
mechanism. File transfers over the ARPA network initiated remotely without
providing a password are treated as guest account use for file protection
purposes.