Backspace doesnot work when users type username/passwd

[Shu Lei]

Hello everyone.

Here comes the detail of my question:
After a telnet session established to HP-UX 11.0, the backspace doesn't apply to the input whatever the TERM is, so that users are not able to correct their input.

I guess it's nothing to do with .profile and "stty" settings, for telnet session occurs before reading the .profile.

Thank you for your time in advance.
Lorne Shu

[Alex Glennie]

see http://forums.itrc.hp.com/cm/QuestionAnswer/1,11866,0x27b8cf38d6bdd5118ff10090279cd0f9,00.html

for some useful clues ?

[Shu Lei]

Hi Alex,

I believe that's something before reading "stty" settings in .profile for I have tried "stty" before and found out that "stty" doesn't work in this case.

Anyway, thanks.

[Darrell Allen]

Hi,

I believe there are several threads concerning this in the forums but basically the erase character needs to be specified. You can do that with: stty erase

You can choose another key if you like. You can add it to users' .profile or to the system's /etc/profile. Csh users have /etc/csh.login or .cshrc.

Also, terminal emulation programs generally let you configure the delete and/or backspace keys. Often, it's just telling the emulation program to send the other ascii character instead of its default.

As far as entering a backspace while typing the password, you may be able to use instead. works for my terminal emulator.

Darrell

Darrell

[Carlos Fernandez Riera]

try #

[Alex Glennie]

out of interest are you using something like reflections on a PC to telnet to the hpux server ?

[James Beamish-White]

Ahhh, I think I understand your question:

me> telnet yourserver
Trying...
Connected to yourserver
Escape character is '^]'.

login: blablablax (and can't delete mistakes)

I have never been able to do that either. The user, when typing in their username or password, cannot backspace to delete mispellings. However, if you make a mistake when typing the username or password, type the @ symbol, and the telnetd will ignore all characters beforehand. e.g. if your username is 'myuser', then at the telnet prompt this will work:
login: myuss@myuser
password:

CHeers,
James

[Shu Lei]

Alex,
I have tried "cmd" and reflection to establish the telnet session; although they act a little different to backspace, both of them failed at last.

By the way,
Darrell, users could hardly set backspace with "cmd", how could they do if they are using "cmd" and ansi as terminal type?

Carlos, what do you mean by "#"? as backspace?

Thanks all of you who is replying so far!

[Alex Glennie]

this is a guess as I cant reproduce your problem but try looking in reflections->setup-> terminal->emulation .... maybe set it to VT-something and then look at the keyboard settings as you can now map the vt backspace to delete etc ?

[Shu Lei]

Hi Carlos & James,

I understand what exactly what you mean for "#" and "@". I would like take them as a solution to users, if I cannot find the ideal way on server side (in spite of disturbing users)to solve the problem.

in summary to the solutions for telnet,
when you make a mistake while typing username,
just type:
'#' means "Send Telnet Erase Character";
'@' means "Send Telnet Erase Line";
after that, type the right characters or retype again.

Thank you all for your time.

[Rodney Hills · Accepted solution]

Try using the following
stty erase ^h
If you run this command during your hpux boot, then all terminal logins from then on will be able to use the BACKSPACE key!

See man ssty.

-- Rod Hills

[Shu Lei]

Thanks a lot to Rodney Hills!
That exactly solved the problem.