CS/CE 218 Quiz #1	Unix file system		September 6, 1991

1. (2 pts) Briefly describe what a file can do that a directory cannot do.





2. (a) (1 pt) What command sets the shell's current working directory?


   (b) (1 pt) What command prints the full path name of the shell's
       current working directory?



3. (2 pts) Suppose you execute the command
		ls -l docs/letters
   and its output is:
docs/letters
total 65

(Notice the size printed and the lack of any information about files.)
What command would you use to find out the names of the files that are
using up the space in the directory docs/letters?





4. (1 point each)
   (a) Does the "cp" command change a directory (when it is successful)?



   (b) If file "y" exists and you execute "rm y", is file "y" written?



   (c) What character always starts a full path name?