unix sleep and date commands


 
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# 1  
unix sleep and date commands

please help me to fix my script trying to use sleep 2 minutes while the system is sleeping i want to print out same message every 5 seconds
thanks
t=`date +%S`

while [ t = t+120 ]
do
sleep 5

echo "this program will end in 2 minute"
done
# 2  
I would use "bc" to do the calculation.

WAITSECS=`echo $WAITSECS - 5 | bc`
 

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