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document sleep command exit codes

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Andrey Borzenkov 2013-11-30 14:57:11 +04:00
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docs/grub.texi
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@ -4883,7 +4883,8 @@ Alias for @code{hashsum --hash sha512 arg @dots{}}. See command @command{hashsum
@deffn Command sleep [@option{--verbose}] [@option{--interruptible}] count
Sleep for @var{count} seconds. If option @option{--interruptible} is given,
allow @key{ESC} to interrupt sleep. With @option{--verbose} show countdown
of remaining seconds.
of remaining seconds. Exit code is set to 0 if timeout expired and to 1
if timeout was interrupted by @key{ESC}.
@end deffn