Questions

1. What is the output of the following command?

$ awk 'BEGIN{var="I love AWK tool"print $var
}'

 

2. Assume you have the following file:

13
15
22
18
35
27

Then you run the following command against this file:

$ awk '{if ($1 > 30) print $2}' myfile

How many numbers will be printed?

3. Assume that you have the following file:

135 325 142
215 325 152
147 254 327

And you run the following command:

$ awk '{total = 0i = 1while (i < 3){total += $ii++}mean = total / 3print "Mean value:",mean
}' myfile

What is wrong with the previous code?

4. How many lines will be printed from the following command?

$ awk -F":" '$3 < 1 ' /etc/passwd