Mastering Linux Shell Scripting - Second Edition

Questions

1. Assume that you have the following file:

Welcome to shell scripting.I love shell scripting.shell scripting is awesome.

Say you run the following command:

$ awk '/awesome$/{print $0}' myfile

How many lines will be printed in the output?

2. How many lines will be printed if we use the following command against the previous file?

$ awk '/scripting\..*/{print $0}' myfile

3. How many lines will be printed if we use the following command against the previous sample file?

$ awk '/^[Ww]?/{print $0}' myfile

4. What is the output of the following command?

$ echo "welcome to shell scripting" | sed -n '/Linux|bash|shell/p'