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Shell Programming and Scripting

Timer as output

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# 1  
Old 04-13-2011
Timer as output
How do you set timer as output to the command line so that you get an output like

Has been waiting for 5 seconds
Has been waiting for 6 seconds
...

Where only the number changes.
# 2  
Old 04-13-2011
Code:
N=1

while true
do
        sleep 1
        echo "waiting $N seconds"
        ((N=N+1))
done

# 3  
Old 04-13-2011
Code:
i=0
while :
do
    trap break INT
    echo "Has been waiting for $i second"
    let i+=1
    sleep 1
done

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