Dear Physics 129 students

We covered a lot of "unix ground" yesterday.
I have posted the slides from the lecture on the website under
"Additional Material".  Have a look in particular at the last
page which lists the unix commands that we discussed.

There is no homework this week but I recommend the following if
you have no or limited previous unix experience.

(1) Practice creating and editing a text file with emacs, exploring
    the various keyboard shortcuts that are highlighted in the 
    'emacs cheat sheet' psted on the webiste.  Or, if you prefer,
    do the same with vim.  See for example
    https://www.radford.edu/~mhtay/CPSC120/VIM_Editor_Commands.htm
    Also, chapter 12 of the online free linux textbook that is linked 
    on the webiste.

(2) Review the unix commands on the last page and play around with them.
    Remember that in some cases they have been "reconfigured" for you
    through aliases.  Type "alias" to see the list of aliases.  Note 
    that you can remove one or more of the aliases through the the
    "unalias" command, eg, "unalias ls" removes the alias to ls.
    This may be useful when you play around.

(3) Be careful not to delete important files as you explore the system.
    I recommend making a special directory to be your "sandbox".

(4) Read chapters 1-3 of the online free linux text book.  Also as you 
    explore the commands, look for their description in the textbook as well.

(5) If you are ambitious, read ahead a little bit.  Next week we will
    cover items from chapters 4, 5, 6, 8, 9, 10, 11. (we already covered
    some of them).

C.