The password for this virtual machine is:
  lab391

Here are some simple linux commands to get you started. Don't type the
 '$' sign. It's just indicating the command line in linux. 

	1. To create a directory (lets call it yourdirectory) type:
	   $ mkdir yourdirectory
	2. To start up your astronomy image viewer type:
	   $ ds9 &
	3. To start up pyraf type:
	   $ pyraf
	4. To go to this directory type:
`	   $ cd ~/yourdirectory   
	5. To go back to the main home directory type:
	   $ cd
        6. Copying files:
	   $ cp file1 file2    #create a duplicate file in same directory
	   $ cp /home/lab391/dir1/file1 /home/lab391/dir2/ #copy same
           file from one directory to another
        7. To find your directory path and present location, type:
           $ pwd   
	8. To list the contents of a directory, type:
	   $ ls
	9. To view, compose and edit text documents, type gedit. e.g.:
	   gedit myfile
        10.To view this file, type:
           cat readme.txt