Script to show the use of while loop.

echo Enter a number to print it's table
read n
i=1
while [ $i -lt 10 ]
do
i='expr$i*$n'
i='expr$i+1'
echo $i
done


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"while" 13L, 158C


Output:-

Even numbers between 1-20 are:-
2
4
6
8
10
12
14
16
18
20