Telnet Backspace Problems

bblake · 04-13-2002, 01:03 PM

Whenever I use the terminal program to telnet from my computer to my school's local server, I can't use backspace. When I hit backspace it prints ^? Is there a preference somewhere in the Terminal that I need to set to send a backspace on a telnet connection? Or is this a problem with the configuration of the server I'm trying to connect to?

sangandongo · 04-13-2002, 01:18 PM

this isn't mac specific, it happens when your terminal can't emulate the console type properly.

after logging in to the server giving you this error, type the following:

stty erase (backspace)

where (backspace) is the button itself, not the word in parens. this should actually end up looking like this: stty erase ^?

hit enter and now backspace will work.

xchanyazy · 04-13-2002, 02:52 PM

Put the stty command that sangandongo said in your ~/.cshrc file (on the server, it might be called .login or .profile, depending on the login shell) so that you don't have to type it everytime.

sao · 04-25-2002, 04:30 AM

bblake,

Note that ^? should be quoted as '^?' or ^\? in the ~/.login file to turn off the special meaning that the ? character has to the shell as a pattern matching operator.

Cheers...

sangandongo · 04-25-2002, 08:12 AM

echo echo e c h o . . .

sao · 04-25-2002, 04:37 PM

sangandongo,

Sorry about that. Already deleted the 'echo' part in my post.

Cheers...

macubergeek · 04-25-2002, 04:39 PM

instead of using backspace you could use delete instead.

normcook · 04-25-2002, 08:49 PM

control h

sangandongo · 04-26-2002, 09:46 AM

Sao,

No need to apologize, I was simply having a bit of fun.

anyhow, you were right about the escape characters. It slipped my mind that he might have taken my '^?' literally.

Gheto Fabulous · 11-30-2003, 12:44 AM

I have this problem too, but typing a Backspace or delete sends ^H or ^[[3~ in Panther on Secure FTP

IF I type the stty erase command - I just get an error like this:

sftp> stty erase ^H
Invalid command.
sftp>

sftp> stty erase ^H?
Invalid command.
sftp>

How can I fix this?

acme.mail.order · 11-30-2003, 10:08 AM

You're having a problem because you are talking to the wrong program. 'stty' is a shell program that modifies the shell's environment. sftp is another shell program that moves files between systems. The difference is that sftp is interactive, and once you start it it has it's own set of commands - it doesn't understand shell language and vice versa.

stty runs and exits in a single line and returns you to the shell from whence you came.

try using the stty command outside of sftp. If you can type and delete in the shell, you should also be able to do it with all shell programs.

Gheto Fabulous · 11-30-2003, 02:01 PM

Quote:


	Originally posted by acme.mail.order try using the stty command outside of sftp. If you can type and delete in the shell, you should also be able to do it with all shell programs.

Thanks for the explanation, much appreciated... and this is kinda what I thought.... however, when I'm in a sftp session only, the delete key doesn't function as expected.
When I do local shell session or ssh to my other Mac, the delete key functions normally.
I have a feeling it's one of my dot files. I had to take out the line:
echo hello $user from my .tcshrc in order to get sftp to work in the first place. It kept throwing up an error otherwise.

I think there is also something going on with my install of the terminal because after I complete a session, logout and quit the terminal, next time I load the terminal I'm logged out again with a message process completed.

What other files do you think I should look at besides my ~/.tcshrc ?

acme.mail.order · 11-30-2003, 09:05 PM

Try using a different shell. Type 'bash' at the first prompt to switch to the bourne shell. check that delete works, then run sftp.

Any particular reason you're using sftp instead of plain ftp?

jhankins · 12-09-2003, 12:32 AM

I would guess sftp is being used for security yes?

For those that don't know, ftp happens in the clear, meaning one can be somewhere in the traffic flow and decern usernames and passwords with traffic capturing (sniffing) sftp is a much more secure method of file transfer.

Best Regards,

Jim

Gheto Fabulous · 12-10-2003, 05:40 PM

Indeed my dear jhankins, indeed.

yet still I gets the same problems and dilemmas - but only during sftp - ssh is fine - no idea why it happens, so have given up :-)

04-13-2002, 01:03 PM	#1
bblake Prospect Join Date: Apr 2002 Location: Santa Cruz Posts: 1	Telnet Backspace Problems Whenever I use the terminal program to telnet from my computer to my school's local server, I can't use backspace. When I hit backspace it prints ^? Is there a preference somewhere in the Terminal that I need to set to send a backspace on a telnet connection? Or is this a problem with the configuration of the server I'm trying to connect to?

04-13-2002, 01:18 PM	#2
sangandongo Prospect Join Date: Apr 2002 Location: d/fw Posts: 4	easy fix this isn't mac specific, it happens when your terminal can't emulate the console type properly. after logging in to the server giving you this error, type the following: stty erase (backspace) where (backspace) is the button itself, not the word in parens. this should actually end up looking like this: stty erase ^? hit enter and now backspace will work. __________________ -- ghx

04-13-2002, 02:52 PM	#3
xchanyazy All Star Join Date: Jan 2002 Location: Dexter, MI, USA Posts: 704	Put the stty command that sangandongo said in your ~/.cshrc file (on the server, it might be called .login or .profile, depending on the login shell) so that you don't have to type it everytime. __________________ - Greg Happy user of OS X since the Public Beta. Help Team Mac OS X cure cancer, Alzheimer's, ALS, Parkinson's, and more!

04-25-2002, 04:30 AM	#4
sao Moderator Join Date: Jan 2002 Location: Singapore Posts: 4,237	bblake, Note that ^? should be quoted as '^?' or ^\? in the ~/.login file to turn off the special meaning that the ? character has to the shell as a pattern matching operator. Cheers... Last edited by sao; 04-25-2002 at 04:42 PM.

04-25-2002, 08:12 AM	#5
sangandongo Prospect Join Date: Apr 2002 Location: d/fw Posts: 4	Echo... echo echo e c h o . . . __________________ -- ghx

04-25-2002, 04:37 PM	#6
sao Moderator Join Date: Jan 2002 Location: Singapore Posts: 4,237	sangandongo, Sorry about that. Already deleted the 'echo' part in my post. Cheers...

04-25-2002, 04:39 PM	#7
macubergeek Major Leaguer Join Date: Jan 2002 Location: Gaithersburg, MD Posts: 494	ok I'm lazy instead of using backspace you could use delete instead.

04-25-2002, 08:49 PM	#8
normcook Prospect Join Date: Jan 2002 Location: ann arbor, mi Posts: 24	you could also just use control h

04-26-2002, 09:46 AM	#9
sangandongo Prospect Join Date: Apr 2002 Location: d/fw Posts: 4	To Mr. Hand Sao, No need to apologize, I was simply having a bit of fun. anyhow, you were right about the escape characters. It slipped my mind that he might have taken my '^?' literally. __________________ -- ghx

11-30-2003, 12:44 AM	#10
Gheto Fabulous Triple-A Player Join Date: Mar 2003 Location: Australia Posts: 112	I have this problem too, but typing a Backspace or delete sends ^H or ^[[3~ in Panther on Secure FTP IF I type the stty erase command - I just get an error like this: sftp> stty erase ^H Invalid command. sftp> sftp> stty erase ^H? Invalid command. sftp> How can I fix this?

11-30-2003, 10:08 AM	#11
acme.mail.order League Commissioner Join Date: Sep 2003 Location: Tokyo Posts: 6,334	You're having a problem because you are talking to the wrong program. 'stty' is a shell program that modifies the shell's environment. sftp is another shell program that moves files between systems. The difference is that sftp is interactive, and once you start it it has it's own set of commands - it doesn't understand shell language and vice versa. stty runs and exits in a single line and returns you to the shell from whence you came. try using the stty command outside of sftp. If you can type and delete in the shell, you should also be able to do it with all shell programs.

11-30-2003, 09:05 PM	#13
acme.mail.order League Commissioner Join Date: Sep 2003 Location: Tokyo Posts: 6,334	Try using a different shell. Type 'bash' at the first prompt to switch to the bourne shell. check that delete works, then run sftp. Any particular reason you're using sftp instead of plain ftp?

12-09-2003, 12:32 AM	#14
jhankins Triple-A Player Join Date: Dec 2003 Posts: 56	just a guess I would guess sftp is being used for security yes? For those that don't know, ftp happens in the clear, meaning one can be somewhere in the traffic flow and decern usernames and passwords with traffic capturing (sniffing) sftp is a much more secure method of file transfer. Best Regards, Jim

12-10-2003, 05:40 PM	#15
Gheto Fabulous Triple-A Player Join Date: Mar 2003 Location: Australia Posts: 112	Indeed my dear jhankins, indeed. yet still I gets the same problems and dilemmas - but only during sftp - ssh is fine - no idea why it happens, so have given up :-)