#!/bin/sh
#
# Written by Florian Diesch <devel@florian-diesch.de> 
#
# Updates may be available at
# <http://www.florian-diesch-.de/software/shell-scripts/> 
#
# This script is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  
# You are free to do with it what ever you want.
#


sleep_until(){
 s=$((`date +%s --date "$*"` - `date +%s`))
 if [ $s -ge 0 ]; then
   sleep $s;
 fi
}


sleep_until $*