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## vim:ft=zsh
## Countdown to a specific date/time
## Usage: countdown <string understood by 'date -d'>
## or: countdown +<seconds>
## Copyright (C) 2008-2009 by Daniel Friesel <derf@derf.homelinux.org>
## License: WTFPL <http://sam.zoy.org/wtfpl>
autoload check_com
typeset -i beep=0
typeset -i seconds
typeset date
if check_com beep; then
beep=1
fi
if [[ $1 == +* ]] {
date=@$(($(date +%s) + ${1#+}))
} else {
date="$*"
}
while true; do
seconds=$[$(date -d $date +%s)-$(date +%s)]
printf '%02d:%02d:%02d' $((seconds/3600)) $(((seconds/60)%60)) $((seconds%60))
if (( seconds <= 0 )) {
(( beep )) && beep || echo -ne "\a"
}
sleep 1
echo -ne "\r\e[2K"
done
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