Stop echoing ^C to terminal

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bash

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Stop echoing ^C to terminal

How do I tell my bash to not echo ^C back to terminal?

If I just hit Ctrl+C in bash session, nothing is printed in my terminal window. But if I terminate some program with Ctrl+C, sometimes ^C is echoed and printed in my terminal. Is there any way to tell my bash I do not want echoing back ^C at all?

+1 A:

Well, I believe it's actually echoing "caret"-C, not the CTRL-C character. Other than that, this is actually a function of the tty driver, not the shell; the driver actually intercepts the CTRL-C character, generates a SIGINT to the process, and echos the characters. If there is a way to do it on your system (this will be heavily OS dependent) it would be documented in the stty(1) man page or the tty(4) driver page.

Charlie Martin 2009-01-06 20:55:00

Thank you. Changing the output with stty works as I wanted it to on OS X, I have still something missing on Linux.

zgoda 2009-01-07 08:36:54

Well, I said it was heavily system dependent. At least now you're looking in the right place.

Charlie Martin 2009-01-07 15:32:59

+2 A:

Under Linux:

stty -ctlecho

(props to Charlie for the hint - I just went and looked it up)

Andy 2009-01-06 20:57:09

or -echoctl because who wants just *one* flag.

Charlie Martin 2009-01-06 22:58:47

Well, on my linux box (Ubuntu 8.10) it just changes the output from "^C" to some other character(s), apparently dependent on terminal encoding. On OS X box, manpage says it will echo the CTRL-something "as themself" and works as expected.

zgoda 2009-01-07 08:35:16

ansaurus

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Stop echoing ^C to terminal

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