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A Practical Guide to Red Hat® Linux® 8 by Mark G. Sobell

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Exercises

1.The following error message is displayed when you attempt to log in with an incorrect username or an incorrect password:
Login incorrect 

This message does not indicate whether your username, your password, or both are invalid. Why does it not tell you?

2.Give three examples of poor password choices. What is wrong with each? Include one that is too short. Give the error message displayed by the passwd utility.
3.Is fido an acceptable password? Give several reasons why or why not?
4.When you start pico and your screen looks strange, what might be wrong? How can you fix it?
5.How can you get help from pico while you are using it?
6.What pico command(s) would you use to
  1. Delete a line

  2. Undo your last command

  3. Leave the pico editor

7.What are ...

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