August 28 --- Class 1  --- Introduction

Handouts:
	Syllabus
	Student Survey
	AWK tutorial (students are to print this)

Activities:

	Student Survey

		The survey was handed out when students entered.  If you
		did not hand one in at the end of class, please hand one
		in as soon as possible.  It is important for me to have
		an idea of everyone's computing and physics background.

	Class web page and syllabus

		We went over the class web page and the syllabus.

	Introduction to MacOS
		Many of you are not familiar with MacOS, but hopefully
		you will become accustomed to it soon.  At the bottom of
		the screen is an application launcher called the "Dock".
		It shows running applications and applications that you
		can easily launch.  

		Starting X11

		To start X11, a powerful window system, you will first
		add it permanently to the Dock.  You need to locate X11
		in the Finder application. 

		Finder is the friendly face icon at the left side of the
		dock.  You can also get a Finder window by dragging on
		the Apple icon at the upper left hand corner of the
		screen.

		Once you have a Finder window, double click on 
		"Applications"  and then in the list of applications
		that appears, search for the "Utilities" directory.
		Probably near the end of the list in the Utilities directory
		you will find the X11 entry.  Drag the icon down the Dock and
		release.  There should now be an X11 icon in the Dock.
		Click on the icon to start X11.
		
		Once you launch X11 an "xterm" window will appear.  
		You can create additional xterm windows by holding 
		down the "apple command key"
		(either side of the space bar) and the letter "n".  In
		the future, I will call such combinations Apple-N.
		(You don't need to capitalize the n.)

	Logging out
		To log out of the Apple, click on the apple icon in the
		left corner of the menu bar at the top of the screen.
		Drag down to the last line, which should say "Log out"
		and your user name.   (Of course, you don't want to log
		out now, but if you tell anyone how to log into a
		computer, make sure you tell them how to logout before
		leaving them.)

	Modify path variable
		Executables for class exercises will appear beneath my home 
		directory in a subdirectory ~sg/bin
		If you already have file .cshrc in your home directory,
		to add this directory to your path, look for the first
		line in your ~/.cshrc file that starts with
		set path
		Add ~sg/bin just before the closing parenthesis
		You can use any editor that you like to change the file.

		I am old and use the vi editor which predates the emacs
		editor.  emacs is very popular nowadays.  In the old
		days, I always knew that vi would be available, but many
		systems did not have emacs.  You will be able to use the 
		arrow keys and mouse to move the cursor around the screen.

		Most students did not have a .cshrc file.  In that case,
		execute this command in an xterm window:

		cp ~sg/cshrc_student .cshrc

		Start, or restart, tcsh by typing

		tcsh

		If this command pops up a blank set of axes on your
		screen, you are done for today:

		axis </dev/null |plot -Tx

		If this does not work, see me ASAP for help.

		Don't forget to read the AWK tutorial for the next class.