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getkey - Unix, Linux Command
NAME
getkey - wait until a key is pressed
SYNOPSIS
getkey [OPTION]... [KEYS]
DESCRIPTION
getkey waits until one of
KEYS is pressed.
If
KEYS are not specified, any key is accepted.
KEYS are matched case-insensitive.
EXIT STATUS
getkey exits with status 0 if one of the expected keys is pressed.
If invalid arguments are specified,
getkey exits with status 255.
If
getkey is interrupted or the wait times out,
getkey exits with other non-zero status.
OPTIONS
Tag | Description |
-c, --wait SECONDS
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Wait only for
SECONDS seconds.
The default is 0, which means to wait without a time limit.
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-i, --ignore-control-chars
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Dont treat Ctrl+C and Ctrl+D specially.
When this option is not specified, these characters interrupt getkey.
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-m, --message MESSAGE
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Display
MESSAGE while waiting.
The message is used as a format string in
sprintf(3),
with a single argument, the number of seconds left.
Typical usage is therefore
"Press a key within %d seconds to ...".
If
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.
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