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Swapping two number using a Shell Program. I tried this in Ubuntu Linux. Saved with the extension of .sh, and i run this program by using sh <filename>. Lets try out and tell any query if there.

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[sourcecode language=’css’]
echo “SWAP TWO NUMBERS USING TWO VARIABLES”
echo “Enter the value of two numbers”
read a
read b
echo “Enter the value of two numbers”
echo “a=$a , b=$b”
a=$ [ $a + $b ]
b=$ [ $a – $b ]
a=$ [ $a – $b ]
echo “After swapping the values are:”
echo “a=$a , b=$b”
[/sourcecode]
Output:

SWAP TWO NUMBERS USING TWO VARIABLES

Enter the value of two numbers
a=5
b=10
After swapping the values are:
a=10
b=5