1. Show the steps to create a variable called NICKNAME which has a nickname for you in it; make this variable available to the environment

2.Show a command that uses re-direction of input and explain its purpose:

3.Provide a connected command sequence (i.e., multiple commands) where the commands runconditionally - that is, where later commands only run if the prior commands have been successful.

4.Given the command: dd if=oldtemp of=newtemp conv=ebcdic

Describe each component of this command, specifically:

a) What does the 'dd' mean (i.e., what is the command for)?

                b) What does the 'if=tempfile' option mean?

                c) What does the 'of=newtemp' option mean?

                d) What does the 'conv' clause do?

5.Describe the purpose of the following command: find . "(" -name a.out -o -name core ")" -exec rm {} \;   

                a) What files are trying to be 'found':

b) What does the '-o' do in this command?

                c) What is the 'result' if the files are found?

                d) What does the command do if the files are not found?

                e) What does the '.' (dot) after the word 'find' mean?

Computer Science