|-c, --wait SECONDS|
Wait only for
The default is 0, which means to wait without a time limit.
Dont treat Ctrl+C and Ctrl+D specially.
When this option is not specified, these characters interrupt getkey.
|-m, --message MESSAGE|
MESSAGE while waiting.
The message is used as a format string in
with a single argument, the number of seconds left.
Typical usage is therefore
"Press a key within %d seconds to ...".
MESSAGE contains other format string directives, the behavior is undefined and
getkey may crash.
If there is no time limit specified, the number of seconds left is reported as 0.
$ getkey a$
The command waits until any key pressed and comes out immediately once the key is pressed
$ getkey -c 5 $ $ getkey -c 5 a$
In the first example the command waits for 5 seconds for key press and comes out even if no key is pressed. In the second example the command comes out immediately after key is pressed.
$ getkey -c 5 -m "Press key within %d seconds" Press key within 5 seconds $ getkey -c 5 -m "Press key within %d seconds" Press key within 4 seconds ... ... $ getkey -c 5 -m "Press key within %d seconds" Press key within 1 seconds $ getkey -c 5 -m "Press key within %d seconds" Press key within 0 seconds$
In the above example the command displays a message where the number of seconds keep decrementing till it reaches 0 or key is pressed.
129 Lectures 23 hours
46 Lectures 4 hours