how do stty settings and signals correlate

[Ian Lochray]

What is the correlation between stty settings and signals. For example, I have stty eof set to ^D - what signal will this generate? Where can I see the correspondence between the two?

[David Lodge · Accepted solution]

There is no real correlation between the two - stty is for setting up your terminal settings. Signals are a basic form of interprocess communication.

EOF doesn't send a signal - all the shell sees is that it recieves an EOF character and terminates the file (or shell)

Some of the stty setting will send signals *to your currently running command* - such as INTR, QUIT, KILL etc, these send the signal of that name (use kill -l to find out the signal names)

dave

[Sridhar Bhaskarla]

Hi Ian,

I am not sure if I understand your question. EOF character is interpreted as end-of-file by the terminal. Best examples are kill and erase. If you set up ^U as the kill character, then typing in ^U at the terminal after typing in a word will make the terminal to kill the word.

Check out the man page termio and stty for more details.

-Sri

[John Palmer]

EOF doesn't generate a signal, it just defines the character that is interpreted as 'End Of File'. See man termio for details and also 'kill -l'.

Special characters that do generate a signal are:-

intr signal 2
quit signal 3
susp signal 24

Regards,
John