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1.1 NCSA Telnet
Starting and Quitting NCSA Telnet 1.1
National Center for Supercomputing Applications
June 1991
1.1 NCSA Telnet
Starting and Quitting NCSA Telnet 1.1
National Center for Supercomputing Applications
June 1991
6/30/91
Chapter 1 Starting and Quitting NCSA Telnet
Chapter Overview
Starting the Program
Using the Help Screen
Quitting NCSA Telnet
Chapter Overview
This chapter introduces and describes the basic steps involved in
using NCSA Telnet for the IBM PC:
Ñ starting the program
Ñ setting the terminal type
Ñ opening and closing a telnet connection
The chapter assumes that your system or network administrator
has installed NCSA Telnet on your system, assigned an IP
address to your IBM PC, and given you a login name and password
for the computer to which you want to connect. For information
regarding installation and customization procedures, refer to
Chapter 7, "Installation and Configuration."
If you require additional information regarding the IBM interface
or command line structure, please refer to your IBM PC user's
guide.
Starting the Program
To run NCSA Telnet from the PC command line, from any
subdirectory, enter:
C:\ > telnet machinename
This command initiates a connection to the remote computer with
the name given as the machinename parameter. Normally the
host machine immediately prompts you for a login name and
password to begin the session.
NCSA Telnet emulates a VT100 terminal. When you log in to a
host, the host operating system does not know what type of terminal
you are using. Consult the operating system manual for how to set
terminal type and try setting it to VT100 or VT102. For systems that
do not support VT100 (such as many UNIX systems), use VT100,
which is compatible with VT102 emulators. These examples show
how to set the terminal type for two popular operating systems,
UNIX (using the C shell) and VAX/VMS.
newton% set term=vt100;tset For UNIX hosts.
B$ SET TERM/INQ For VAX/VMS hosts.
Using the Help Screen
For a command summary, press ALT-H. A one-screen summary
of command keys appears, as shown in Figure 1.1. The online help
summary serves as your quick reference to the command keys.
Figure 1.1. NCSA Telnet Help
Screen
Keyboard usage for NCSA telnet:
Alt-A add a session Alt-Y Interrupt Process
Alt-N next session Alt-B Previous Session
Alt-D Dump Screen to Capture file Alt-O Abort Output
Alt-Z message screen Alt-Q Are you there?
Alt-E escape to DOS shell Alt-U Erase line
Alt-G graphics menu Alt-K Erase Kharacter
Alt-C toggle capture on/off Alt-V Paste Capture to Session
Alt-R reset VT100 screen HOME exit graphics mode
Alt-H this help screen Ctrl-HOME clear/enter graphics mode
ScrLock pause/restart screen (DO NOT
use Ctrl-NumLock)
ScrLock enter/exit scroll-back mode
Alt-F start file transfer as if typed:
ftp [internet address]
Alt-I send my internet address to host
as if typed
Alt-S skip scrolling, jump ahead
Alt-P change a parameter, one of:
color, capture file name, backspace,
session name, screen mode
Alt-X close connection
CTRL-Shift-F3 abort program completely.
STRONGLY discouraged
Press ESC for information page, space bar to return to session:
NOTE: See Chapter 4, "Utility Programs," for information on
other network utilities, such as the following: finger, ftp, lpq, lpr,
lprm, rexec, and set clock.
Quitting NCSA Telnet
To exit the program, log out of the host machine using the
appropriate logout procedure for that machine. If you have
concurrent sessions with more than one machine, you must log out
of each machine. Then NCSA Telnet exits and the DOS prompt is
displayed.
If one of the hosts crashes, or a session is otherwise hung up, press
ALT-X. NCSA Telnet first prompts you for confirmation and then
attempts to close the session while preserving your other live
sessions.
When all else fails, and it appears that all of the connections are
completely jammed, press CTRL-Shift-F3 to abort the program.
Only use CTRL-Shift-F3 as a last resort.
Pressing CTRL-C or CTRL-BREAK sends a CTRL-C to the host.
You can neither use these commands to break out of NCSA Telnet,
nor end your session.