HP-UX Reference (11i v2 07/12) - 1 User Commands N-Z (vol 2)

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telnet(1) telnet(1)

crlf If TRUE, end-of-line sequences are sent as an ASCII carriage-return and line-

feed pair. If FALSE, end-of-line sequences are sent as an ASCII carriage-return

and NUL character pair. The initial value for this toggle is FALSE.

crmod Toggle carriage return mode. When this mode is enabled, any carriage return

characters received from the remote host are mapped into a carriage return and

a line feed. This mode does not affect those characters typed by the user; only

those received. This mode is only required for some hosts that require the client

to do local echoing, but output ‘‘naked’’ carriage returns. The initial value for

this toggle is FALSE.

echo Toggle local echo mode or remote echo mode. In local echo mode, user input is

echoed to the terminal by the local telnet

before being transmitted to the

remote host. In remote echo, any echoing of user input is done by the remote

host. Applications that handle echoing of user input themselves, such as C shell,

Korn shell, and

vi (see csh(1), ksh(1), and vi(1)), do not work correctly with

local echo.

options

Toggle viewing of TELNET options processing. When options viewing is enabled,

all TELNET option negotiations are displayed. Options sent by

telnet are

displayed as ‘‘SENT’’, while options received from the TELNET server are

displayed as ‘‘RCVD’’. The initial value for this toggle is FALSE.

netdata

Toggles the display of all network data (in hexadecimal format). The initial

value for this toggle is FALSE.

? Displays the legal toggle commands.

RETURN VALUE

In the event of an error, or if the TELNET connection is closed by the remote host,

telnet returns a

value of

1. Otherwise, it returns 0.

DIAGNOSTICS

The following diagnostic messages are displayed by telnet:

Error! Could not retrieve authentication type.

There are two authentication mechanisms used by TELNET. One authentication mechanism is

based on Kerberos and the other is not. The type of authentication mechanism is obtained from

a system ﬁle, which is updated by inetsvcs_sec . If the system ﬁle on either the local host or

the remote host does not contain known authentication types, the above error is displayed.

telnet/tcp: Unknown service

telnet

was unable to ﬁnd the TELNET service entry in the services(4) database.

hostname: Unknown host

telnet

was unable to map the host name to an Internet address. Your next step should be to

contact the system administrator to check whether there is an entry for the remote host in the

hosts database (see hosts(4)).

?Invalid command

An invalid command was typed in telnet command mode.

system call>: ...

An error occurred in the speciﬁed system call. See the appropriate manual entry for a descrip-

tion of the error.

AUTHOR

telnet was developed by the University of California, Berkeley.