Solutions

1.	exit, pwd, cd /home (or cd ..), pwd, ls -F, cd
	You end up in your home directory after the cd.

2.	The file is /letters/personal/family/brother/smothers.
	To read it: more /letters/personal/family/brother/smothers.

3.	When you work on files in the current (working) directory, you don't 
	need to type pathnames, thus saving typing, thus increasing
	productivity and reducing chances for errors.

4.	ls -F /
	Now count how many have a slash after them.

5.	mkdir fileletters
	mv filea fileb filec fileletters
	OR
	mv file* fileletters	What happens if you do this?

6.	mkdir playfiles
	cd fileletters
	pwd
	ls -F
	cp filea fileb filec ../playfiles

7.	cd
	rmdir fileletters	Fails because fileletters is not an empty dir.
	rm fileletters/*	Empty it.
	rmdir fileletters	Works this time.

8.	ls -a
	ls -a progs
	more progs/.readmenow

9.	cd
	mv playfiles/* .
	rmdir playfiles
