stty and tty behavior

[Andrew Dutton]

I am not sure how this happened, but we did something that messed with the stty or tty settings. CTL-C no longer works, nor does backspace. stty sane and then trying to set erase does not work either. This is driving me crazy...

# stty
speed 38400 baud; -parity hupcl
min = 1; time = 1; erase = DEL;
swtch ;
brkint -inpck icrnl onlcr tab3
-iexten echo -echoe echok
-echoctl -echoke
# env
_=/usr/bin/csh
MANPATH=/usr/share/man:/usr/dt/man:/usr/local/man:/usr/openwin/man:/usr/man:/usr/admsnap/man:/opt/ignite/share/man:/opt/samba/man:/opt/resmon/share/man
SHLIB_PATH=/usr/lib:/usr/lib/X11R5:/opt/Navisphere/lib:/opt/java1.4/jre/lib/PA_RISC2.0/hotspot:/opt/java1.4/jre/lib/PA_RISC2.0
PATH=/usr/sbin:/usr/bin:/sbin:/usr/local/bin:/usr/ccs/bin:/usr/local/sbin:/opt/Navisphere/bin:/opt/java1.4/jre/bin:/usr/optio/eci77/bin/
COLUMNS=80
LOGNAME=root
ERASE=^H
OPTIO_HOME=/usr/optio/
SHELL=/sbin/sh
JAVA_HOME=/opt/java1.4
HOME=/
TERM=xterm
PWD=/
TZ=PST8PDT
LINES=31
autologout=4800

[James R. Ferguson]

Hi:

Try using:

# stty sane

Regards!

...JRF...

[Andrew Dutton]

Already try that... no change :-(

[James R. Ferguson]

Hi (again) Andrew:

See the manpages for 'stty'. In particular note The EXAMPLES section. In your case, it appears that you need to specify the correct control sequences and redirect them to STDIN of '/dev/ttyconf'.

The Technical Knowledge Base ( # emr_na-c01007288-1 ) suggests that Ignite may have been the causitive culprit.

Regards!

...JRF...

#

[Steven Schweda]

> # stty
> [...]

"stty -a" might tell us more.

> CTL-C no longer works, nor does backspace.

> erase = DEL;

Apparently, Delete might (unless it's also
assigned to other actions).

> [...] trying to set erase does not work
> either.

Set how? It's hard to tell what you might be
doing wrong if you won't say what you did.

Also, "does not work" is not a useful
description of either what you did or what
happened when you did it, both of which may
be necessary data in a case like this.

> [...] -echoe [...]

"man stty" should explain why this might be a
poor choice for an xterm.

[Dennis Handly]

Once you do "stty sane" you must put everything back:
stty intr ^c susp ^z erase ^h kill ^u