topic shell use telnet not work normal.... in Operating System - HP-UX

shell use telnet not work normal....

NETSKYCN — Tue, 12 Jun 2007 04:30:08 GMT

Hi,all,

The test.sh is use telnet to connect the HP-UX 11.11u server,but it closed while the username echoed.
But,when user telnet command is normal work.
HOW/WHY it happened? Thanks.
------------------------
test.sh

#!/bin/sh
# test.sh
(
sleep 1
echo "info"
sleep 6
echo "abc123"
sleep 1
echo "vt100"
sleep 2
echo "cd ..;pwd"
sleep 2
echo "exit"
) | telnet 192.168.36.21

--------------------------------
% sh ./test.sh

Trying...
Connected to 192.168.36.21.
Escape character is '^]'.
Local flow control on
Telnet TERMINAL-SPEED option ON
Authorized Access Only.

login: info
Password: Connection closed by foreign host.

NORMAL work.
-----------------------------
telnet 192.168.36.21
Trying...
Connected to 192.1168.36.21.
Escape character is '^]'.
Local flow control on
Telnet TERMINAL-SPEED option ON
Authorized Access Only.

login: info
Password:
Please wait...checking for disk quotas
(c)Copyright 1983-2000 Hewlett-Packard Co., All Rights Reserved.
(........)
Authorized Access Only.
TERM = (hp) vt100

Re: shell use telnet not work normal....

Peter Godron — Tue, 12 Jun 2007 04:47:23 GMT

Hi,
and welcome to the forums !

Please see these earlier threads:
http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=799710
http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=112262

Please read:
http://66.34.90.71/ITRCForumsEtiquette/after.html

Please also read:
http://forums1.itrc.hp.com/service/forums/helptips.do?#33
on how to reward any useful answers given to your questions.

Re: shell use telnet not work normal....

Dennis Handly — Tue, 12 Jun 2007 05:06:05 GMT

Here are some other threads about telnet:
http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=1128490
http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=1049594

Re: shell use telnet not work normal....

Rasheed Tamton — Sun, 17 Jun 2007 02:12:49 GMT

Hi,

>sleep 1
>echo "info"
>sleep 6
>echo "abc123"

How about increasing the first sleep to 4 or 5 and after the user name to reduce the sleep value to 1 or 2 - as below:

sleep 5
echo "info"
sleep 1
echo "abc123"

Re: shell use telnet not work normal....

Duncan Edmonstone — Sun, 17 Jun 2007 04:46:56 GMT

Hi,

For this kind of thing you'd do much better to use expect rather than try and create a shell script for it:

http://hpux.connect.org.uk/hppd/hpux/Tcl/expect-5.43/

Note all the run time dependencies you also need to install.

HTH

Duncan