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Annotation of researchv10dc/dist/man/v3/manx/login.7, revision 1.1.1.1

1.1       root        1: .pa 1
                      2: .he '6/15/72''LOGIN, LOGOUT (VII)'
                      3: .ti 0
                      4: NAME           logging in and logging out
                      5: .sp
                      6: .ti 0
                      7: SYNOPSIS       --
                      8: .sp
                      9: .ti 0
                     10: DESCRIPTION    UNIX
                     11: must be called from an appropriate terminal.
                     12: UNIX supports ASCII terminals typified by the Teletype M37,
                     13: the GE Terminet 300, the Memorex 1240, and various
                     14: graphical terminals on the one hand, and IBM 2741-type
                     15: terminals on the other.
                     16: 
                     17: Not all installations support
                     18: all these terminals.
                     19: Often the M33/35 Teletype is supported instead
                     20: of the 2741.
                     21: Depending on the hardware installed, most
                     22: terminals operating at 110, 134.5, 150, or 300 baud can
                     23: be accommodated.
                     24: 
                     25: To use UNIX,
                     26: it is also necessary to have
                     27: a valid UNIX user ID and (if desired) password.  These
                     28: may be obtained, together with the telephone number, from the system administrators.
                     29: 
                     30: The same telephone number
                     31: serves terminals operating at all the standard speeds.
                     32: The discussion below applies when the standard
                     33: speeds of 134.5 (2741's)
                     34: 150 (TTY 37's) and 300 (Terminet 300's)
                     35: are available.
                     36: 
                     37: When a connection is established via a 150-baud terminal
                     38: (e.g. TTY 37) UNIX types out "login:"; you respond with
                     39: your user name, and, if requested, with a password.
                     40: (The printer is turned off while you type the
                     41: password.)
                     42: If the login was successful, the "@" character
                     43: is typed by the Shell to indicate
                     44: login is complete and commands may be issued.
                     45: A message of the day may be typed if there are any announcements.
                     46: Also, if there is a file called "mailbox", you are notified
                     47: that someone has sent you mail.
                     48: (See the mail____ command.)
                     49: 
                     50: From a 300-baud terminal, the procedure is slightly different.
                     51: Such terminals often have a full-duplex switch, which should
                     52: be turned on (or conversely, half-duplex should be turned off).
                     53: When a connection with UNIX is established, a few garbage
                     54: characters are typed (these are the "login:" message at the wrong speed).
                     55: You should depress the "break" key;
                     56: this is a speed-independent signal to UNIX that a 300-baud
                     57: terminal is in use.  It will type "login:" (at the correct speed
                     58: this time) and from then on the procedure is the same as described
                     59: above.
                     60: 
                     61: From a 2741, no message will appear.
                     62: After the telephone connection is established,
                     63: press the "ATTN" button.
                     64: UNIX should type "login:" as described above.
                     65: If the greeting does not appear after a few seconds,
                     66: hang up and try again; something has gone wrong.
                     67: If a password is required,
                     68: the printer cannot be turned off, so it will appear on the paper
                     69: when you type it.
                     70: 
                     71: For more information, consult
                     72: getty(VII), which discusses the login sequence in more
                     73: detail, and tty0(IV), which discusses typewriter I/O.
                     74: 
                     75: Logging out is simple by comparison (in fact, sometimes too simple).
                     76: Simply generate an end-of-file at Shell level by using
                     77: the EOT character; the "login:" message will appear again to
                     78: indicate that you may log in again.
                     79: 
                     80: It is also possible to log out simply by hanging up the terminal;
                     81: this simulates an end-of-file on the typewriter.
                     82: .sp
                     83: .ti 0
                     84: FILES          /etc/motd
                     85: may contain a message-of-the-day.
                     86: .sp
                     87: .ti 0
                     88: SEE ALSO       init(VII), getty(VII), tty0(IV)
                     89: .sp
                     90: .ti 0
                     91: DIAGNOSTICS    --
                     92: .sp
                     93: .ti 0
                     94: BUGS           Hanging up
                     95: on programs which never read
                     96: the typewriter or which ignore end-of-files
                     97: is very dangerous; in the worst cases,
                     98: the programs can only be halted by restarting the system.
                     99: .sp
                    100: .ti 0
                    101: OWNER          ken, dmr

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