Some common UNIX commands
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pwd				Diplay the name of the current directory
cd <directoryName>		Change directory.  Example:  cd cgs4406
cd ..				Back up one directory
ls				List contents of current directory
ls -l				Long listing with more information on files
mkdir <name>			Make directory.   Example:  mkdir pip1
rmdir <name>			Remove directory. Example:  rmdir pip1
cp <filename> <filename>	Copy command.  Filename can include a
				directory path as well.
				Example:  cp pip1/utility.h pip2
mv <filename> <filename>	Move.  (Also functions as rename).
				Examples:  mv pip1 pip2
					   mv file1.txt file2.txt
rm <filename>			Remove.  Example:  rm digitime.cpp
man <command>			Show manual page on a particular command
				Example:  man mkdir
chmod <option> <name>		Change Mode.  Changes the file permissions
				for directories and files.
				Example:  chmod 755 public_html
pico				Opens up the pico text editor to a blank
				file
pico <filename>			Opens a file in the pico text editor