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Ubuntu stty
From: |
Tom Lake |
Subject: |
Ubuntu stty |
Date: |
Tue, 02 Feb 2010 23:39:16 -0500 |
I'm using Ubuntu 9.10 (32-bit).
I have an ASR-33 Teletype on ttyS0 which can only output uppercase
characters that I'm trying to use as a serial console. My getty
specifies -U to allow for uppercase terminals. stty -F/dev/ttyS0 shows
this:
speed 110 baud; line = 0;
lnext = <undef>; min = 1; time = 0;
-brkint -icrnl ixoff iuclc -imaxbel
olcuc
-icanon -iexten -echo xcase
As you can see, iuclc is clearly in effect but
the conversion from uppercase to lowercase isn't being done.
No commands work, and I had to create a user with an uppercase-only
password just to be able to log in at all.
I tried the following to see what I'm getting from the Teletype:
cp /dev/ttyS0 test
When I terminate the command, the file test has all uppercase in it.
Shouldn't stty have converted the uppercase input to lowercase?
If I set iuclc on tty0 (the normal console) it works as expected and
I can turn on Caps Lock and still execute commands and cp tty0 test
does put lowercase characters in test regardless of the state of Caps
Lock. Is this a bug in stty? If so, I'd like to get a fix so I can use
my terminals in a local antique computer museum.
Thank you for your time.
Tom Lake