To add two numbers in Unix or Linux using awk, you can use the following command:
awk 'BEGIN {print [number1] + [number2]}'
Replace [number1] and [number2] with the two numbers you want to add. For example, to add the numbers 10 and 20, you would use the following command:
awk 'BEGIN {print 10 + 20}'
The awk script in this example uses the BEGIN block to specify a set of commands that should be executed before processing any input. The print statement is used to output the result of the addition of the two numbers. The awk script will run and output the result of the calculation, which in this case is 30.