Hi: In a number of posts, we've

[olded]

Hi:

In a number of posts, we've discussed in shell how to manipulate the terminal driver to return one character without pressing return.

This particular function was posted by Nate, the Bigoldbulldog:

#!/bin/sh

getkey() {
TTYSTATE=`stty -g`
stty raw
key=`dd if=/dev/tty bs=1 count=1 2>/dev/null`
stty "$TTYSTATE"
echo "\nkey is ${key}" | cat -vu
}

echo "Press any key to continue: "
xx=`getkey`
echo "xx: "$xx

I've just had a user complain when they inadvertly press a function key. A function key returns more than one character which breaks the script above.

Does anybody have any ideas on how to handle this? I guess what I need is the ability of flushing standard output when returning from getkey.

Any help is appreciated.

Ed

 

[Chapter11]

or recognizing that the value returned by getkey indicates that it's a function key, and recalling getkey appropriately.