Review Questions
The questions that follow are meant to help you test your knowledge of concepts and terminology and the breadth of your knowledge. You can find the answers to these questions in Appendix A.
1. What is a variable?
2. Which command enables you to find the correct man page based on keyword usage?
3. Which file do you need to change if you want a variable to be set for user bob when this user logs in?
4. When analyzing how to use a command, you read that the documentation is maintained with the Techinfo system. How can you read the information?
5. What is the name of the file where Bash stores its history?
6. Which command enables you to update the database that contains man keywords?
7. How can you undo the last modification you have applied in vim?
8. What can you add to a command to make sure that it does not show an error message, assuming that you do not care about the information that is in the error messages either?
9. How do you read the current contents of the $PATH variable?
10. How do you repeat the last command you used that contains the string dog somewhere in the command?