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November 9, 2009 Wednesday we will have NO CLASS due to the Veteran’s
Day holiday. Homework
#7 is now out on shell programming. It is due Friday November 20 at 5pm via
ANGEL. FYI here is some of the stuff that has been going on lately
with our power grid plus data delivery middleware research. There will very likely be much more
announced in early January… Thursday
I have to cancel my office hours due to hosting 6 visiting researchers from
the European Community (Germany, Italy, Poland) who will be collaborating
with our GridStat project. Please email
me if you need to see me this week and we can set up an appointment. Please also attend the seminar if you can
Thursday, which will be announced later today and probably at either 9am or
10am that day. Today
we will review the core of what we have covered after the midterm (filters,
awk,
shell
programming) to answer any questions and clear up any
misunderstandings, then possibly start on Perl. November 3, 2009 Tomorrow
we will continue on shell programming.
Please be sure to check out the online code in the directory “02-04NovDir” under the FALL09 directory on ssh-server…. If you
have any questions about HW5 grading (or others), please email the TA via
ANGEL. Some of
you asked for an example of the punctuation question from HW5: 5. Find all of the punctuation marks used in the poem, and give a count of the number of occurrences of each. (Hint: you can do something similar to the "tr + sort" word count example.) Here is one possible way to do it (there are others!) tr a-zA-Z " " <
jabberwocky.txt | sed 's/\([!-]\)/\1 /g' | \ tr -s " " '\012' | sort | uniq -c | sort -n Output: 1 : 1 ? 2 ; 2 ' 3 - 4 " 5 . 11 ! 15 , Explanation: ·
The tr gets rid of all the letters (replaces them with spaces). ·
The sed adds a space after ‘!’ or ‘-’, to handle double characters. ·
The tr -s turns whitespace into newlines. ·
The sort | uniq | sort generates the count. ·
It doesn't mater whether they sorted in
ascending or descending order. November 2, 2009 Today
we will have more on source code management (scm), then start on shell
programming. There
will be no homework assignment on scm, but I expect you to look into it a
little more than what we lecture on. October 28, 2009 Today
Aaron Crandal is discussing source code management (scm). This is testable! October 26, 2008 REDUX Homework
#6 is now available. October 26, 2009 Today
we will finish awk. Homework
#6 (on awk) will be given out via this web page later today; it will be due
Monday November 2 at 10am. Office
hours notes: ·
Today my office hours are 3-4, not 9-10,
due to visitors from the Dept. of Energy ·
Thursday my office hours are cancelled ...
I am on a trip back east. I will be
reachable by email most waking hours (you have to do something in meetings
besides listen to the speaker!!!) October 21, 2009 Today
we will finish filters and start on an awkward subject: awk. October 19, 2009 There
are some more options and pattern primitives
that you will be responsible for knowing; I have updated the filters
notes with them at the end. October 16, 2009 A
number of you have not completely turned in some homework assignments 2-4 via
ANGEL. That is to say, you did a
partial submission, but the upload did not get there or got corrupted etc. Since you have evidence of having submitted
in time, we are going to be quite lenient.
I will email individuals shortly, but please submit this ASAP. James
(from the 11:10 section) had a good observation (kudos to James!): A person asked in class if he could just search
for 1 to 3 of a character in a word.
Here’s how I search for 1 to 3 consecutive ‘t’ characters in a word. grep –n –E
‘\b[^t]*tt?t?[^t]*\b’ filename Explanation: We use the extended regex engine (-E), which is the same as calling egrep. \b : enclosing in a ‘\b’ block looks for the pattern in words We first look for zero
or more characters that are not ‘t’, then a ‘t’ character. This is the 1 or first t. Then we look for zero or 1 ‘t’ chars, this is the possible 2 or second ‘t’, then zero or 1 more ‘t’ char, this is the 3 or third ‘t’ character. Then we look for any sequence of non-‘t’ characters in the word. If you remove the ‘\b’ delimiters, then you search without restricting to word boundaries,
but still will only fire on a sequence of 1-3 ‘t’s. We will
discuss this in class Monday. Its not
quite the ideal functionality (at least ideal if it did not result in too
contorted syntax for the pattern), which is something like this for finding x-y copies of pattern: ssh-server% egrep (pattern)x-y Of
course, there is no exponentiation operator (superscript font) for the shell,
and a likely one, '^', is already taken.
So the above would be cool if it was not way too cumbersome to express
in text. And note that pattern could use other egrep operators (e.g., '(pat1|pat2)'), which is even more powerful. Also, a
companion to grep is agrep ("approximate grep": handles
"close" calls), which you can read about more here. This is not
testable, its just FYI. Kinda fun:
that was done at U. Arizona when I was a doctoral student there. It or its successors may be of use and/or
interest to some of you. Finally,
a question on Homework #5 item #1 was asked by email. It is not a problem if there is nothing
that matches in the poem (or if the pattern is even legal English), just give
the pattern that would match that. Have a
great weekend! I hope the Vandals win,
and I am convinced to my core that WSU will not lose its football game this
weekend. October 14, 2009 redux To
access the example files and commands I have done in class, do the following: ssh-server% cd ~cs224/test In that
directory, you will see a directory FALL09 where the most current examples will be,
including a directory for each day (eg., 14OctDir). You are
welcome, however, to poke around all of the other years examples, however,
though they will be mostly identical and those that are not will be very
close to this year's. October 14, 2009 We
reviewed the midterm exam on Monday.
I have decided that, because the midterm had to be a week earlier than
usual, I am going to split the 40% of the grade allocated to exams unevenly:
the midterm will count for 15% and the final 25%. The midterm will not be curved per se, but the course will likely be
somewhat (note the syllabus says the grades will "probably" be like
what I listed; that weasel word is there for a reason). Today
we will start on the meat of the course, starting off with filters. Homework #5 is now out; it is
due at 1159pm on Thursday October 22.
We won't cover everything needed to do this assignment until next
Monday, but you can get started on it if you like. September 30, 2009 NOTE:
there was an error in the syllabus.... the final exams will be at the
following times: ·
Section 1: Tuesday December 15 8:10-10:00am ·
Section 2: Monday December 14 3:10-5:00
(this was reported wrong earlier). Today
we will cover debug macros then review for the midterm. Next
Monday October 5 you will have a lab session (no lecture). Wednesday October 7 will be the midterm
exam. Homework
#4 is now out; it is due Monday at 5pm. September 28, 2009 Today
we will cover more on debugging. September 23, 2009 Today
we will return HW1 hardcopy (hopefully the last hardcopy we send either direction
this semester), go through a Makefile example, and coding for [sic] debugability. In the
ANGEL system, a "dropbox" has been created for you to submit Homework
#2. When logged onto ANGEL,
click the "lessons" tab at the top and you can find a dropbox
called "HW2". This is
due Friday at 5pm, so please those done with it please submit ASAP so we know
if we are going to have any glitches. Homework
#3 is out now. It is due
via ANGEL on Monday September 28 at 5pm. September 22, 2009 Dear
Class, Here is
more info about the ANGEL system that we will be using for online submission
starting with HW2 and also for keeping grades (and notifying you of when your
assignment is graded etc. 1.
Browse to: http://lms.wsu.edu//
and use your student Network ID (same as what is before your @wsu.edu address),
and your Network ID password to get into Angel, you will see your courses
listed in the courses module or nugget. (Click here for a
9 minute video walk-through of Angel or download
iPod version) If don't know or have a Network ID yet, or you want to reset
your password, you can go to the MyWSU portal to create one or look up your
existing ID (using your student ID on the cougcard): http://my.wsu.edu/. Angel forwards all email ONLY to WSU’s brand new student email
system, Outlook Live. You can go to the my.wsu.edu portal to set yours up. Please avoid special characters like !@#$%^&*( in file
names when you upload documents to Angel, as well as compress the images
and files in your assignments and discussion postings. Also,
our fearless TA Haiqin will be creating a "drop box" by which you
can submit HW2. That is not set up
yet, but hopefully will be later tonight.
We will discuss this first thing in both sections tomorrow. NOTE
that any email to you will be sent to your new WSU email address. If you do not regularly use that, please
set it up to forward to the email address you check often. ANGEL
has many features we will not be using in this class, specifically this blog
will be where assignments are given, lecture content is pointed to, etc. Please
try to set up the email above before class tomorrow if possible. September 21, 2009 REDUX PLEASE look through the Makefile example below
(and the simple C program it is used with) by Wednesday and think about it. NOTE: the examples files I use in class are here. (This is a
symbolic link to here from my 224 file in my home directory ("~/224", a symlink) that you see me use on machine ssh-server.eecs.wsu.edu. A good example of using a Makefile on small
program with a few .c files is enum. You can
download the file enum.tar via the web, or on
ssh server copy it: ssh-server % cp ~cs224/public_html/test/enum.tar
. Either way, you have a file enum.tar. To unpack it go: ssh-server % tar xf enum.tar This will create a directory called "enum", so if that already exists tar will complain. (As you may have guessed, tar is a program that
bundles up files, much like WinZip and others do on Windows .) But after you have the directory called "enum" created, you can go there and build the tiny program with make,
edit a .c file (or use "touch" to update its modify time) or delete
a .o file; then practice
calling make to rebuild the program, see what it does. The Makefile there is a nice
simple example. September 21, 2009 Today
we will continue on using the shell and possibly start on make. September 16, 2009 Homework
#2 is now out, it is due online (details forthcoming) at 5pm on
Friday September 25. Today
we will practice and hopefully finish using the shell. Here
are my office hours (when not on travel or ill; my office is EME 55): ·
Monday 9:10-10:00 ·
Thursday 10:10-11:00 If you
cannot make one of these, please email me for an appointment. September 14, 2009 As you
all know, last Monday was Labor Day and Wednesday I was out sick (per email
via the class registration system). So
you had 12 days without me: such luck! Today
we will finish on the file system and start on using
the shell. September 2, 2009 Today
we will start on the file system. Slight
change in schedule: the midterm exam is still on Wednesday Oct 7. However, the review for it will be the
Wednesday before that, September 30, where Homework #4 on the shell will be
given out. Monday October 5 we will
have no lecture, you will have lab time (at any Unix machine you choose) for
HW4. August 31, 2009 Today
we will hear from the WSU Linux User's Group (LUG) and also learn some about the
IEEE
and the ACM. We will
also practice some the basic commands. Homework #1 is now out. It is due in class on Wednesday Sept
9. For this first simple assignment you
will just turn in a hardcopy, later ones we will use the ANGEL system. Here is
an update on Unix Copyrights from James: Just an update on Unix copyrights ownership. From 2007 to a few days ago, Novell had
been granted the rights. This was just
reversed and the courts will take up the issue of whether SCO or Novell
should own the rights. http://spectrum.ieee.org/blog/computing/it/riskfactor/who-owns-unix http://www.groklaw.net/staticpages/index.php?page=20070810205256644
I used to attend UC Santa Cruz and SCO and Borland
were the main employers for computer science students there. My understanding was that SCO stopped
producing products and became a holding company for patents and licenses
related to Unix. They are currently in
Bankruptcy proceedings and have been ordered to liquidate. In an article I read, SCO’s CEO Darl
McBride said he planned to collect license fees from companies who use Linux
if they win. I’m guessing MS would
love that move. Thanks
for the update, James! August 26, 2009 Today
we will go over the basic commands. Note to
students who want to officially transfer from Section 1 (10:10) to Section 2
(11:10) .... Patricia has locked registration until next week to check
prerequisites, so you will not be able to officially come until then. But just come to the section you need to be
in and I will pass around a list today. August 24, 2009 Redux Folks,
those of you who need to officially transfer to Section 2, the limit should
be increased from 33 to 46 shortly.
Please just come Wednesday no matter what and we will sort it out. The
server that is Linux is at ssh-server.eecs.wsu.edu ... you can use any ssh
program such as putty to get into there. August 24, 2009 Welcome to the Fall, 2009 semester! Whenever there is an update to the site, an interesting item to link to, or any sort of news update relating to the class, it will appear on this blog. Today we will go through the course syllabus and Introduction. |
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