Professor Haas showed and explained VI/VIM to the class:

• Learned that is was created by Bill Joy and that it was the first full screen.
• I learned how to navigate, enter text, and other commands.
• VI is a visual editor which has a insert mode and command mode
• Still trying to remember the commands, and understand which one is to be used when. But once I understand it I will be a genius.

This day gimmeh was introduced and a little information on scripts:

• Gimmeh a neat program notifying when assignments are due, and has a count down
• I also learned how to view how many times I have logged in
• Learned how to create and run a script, script file is known as logincnt.sh
• System is starting to pick up with me a little more.

Today we learned about Wildcards, to me seems very tricky stuff:

• wild cards are the following
  • * - match 0 or more of any characters
  • ? - match 1 of any characters
  • [ ] - character class; match 1 of any of the enclosed characters
  • [^] - inverted character class; do not match 1 of any of the enclosed characters
• wild cards are basically a search to help us find the information we are looking for
• Wild cards also show how many of the files have what characters
• I will have troubles remembering commands and I may not use much of this because I am rather the bad lazy type of person

Learning more on shell scripting:

• Commands on shell scripting in VI
  • Echo; to output information to the user
  • read; to input information from the user into a variable
  • $RANDOM; environment variable which gives me a whole bunch of ranged random whole numbers
  • if; statements enabling us to make boolean choices
  • fi; closing the statements of if
  • else; statement to contain the countering action
  • -eg ; equal
  • -ne ; not equal
  • -gt ; greater
  • -ge ; greater than or equal to
  • -lt ; less than
  • -le ; less than or equal
  • exit; force termination of script
• we created scripts that would give random numbers that we try to guess and it would tell us “correct” “wrong”
• Learned how to use the bc inside of the script to minimize the numbers
• I may have a little trouble remembering the commands, but I think I would like to create a script that actually talks with me

Using wild cards, how would it change my search by adding or taking out a character out of the string?

Using the skills, and information learned in class.

My hypothesis, by just changing one character or adding one from the string typed will make a difference in the results.

Using the command ???? to search for directories, then I will change one thing and then add one thing to see what the results are.

I will be working in files in sbin

using the command: ls -d ???? Result: dump fsck halt ifup init mkfs rarp Changing the command to ls -d ???* the result: I received way to much Changing the command to ls -d ????? the result: blkid fdisk getty lsmod rdump rmmod route rtmon udevd Changing the command to ls -d ?????? the result: agetty depmod e2undo ifdown mke2fs nameif rtacct swapon wipefs cfdisk e2fsck findfs insmod mkswap reboot sfdisk sysctl

this gave me every word that was at least four letters, then a result I did not intend for, then every word that was a least five letters, then the next with words that had six letters.

Based on the data collected:

• My hypothesis is correct
• No short comings. You have to be accurate with what you type to get the items you require

That by just changing or adding one character in a command string it will change the results from the previous string

Today we learned a shortcut in Lab46, begin typing file or directory and press tab and it will appear. Learned AND, OR are binary functions and NOT is a unary function. Also learned a little on regular expressions.

Learned a little about C programming, programming paradigms: Paradigm includes structured; Functional; Logical; object - oriented. Discussed Source code portable and Binary Portability

  Source code --- 
  syntax checking,syntax evaluation, pre-processor --- 
  compile/interpret --- 
  assembly --- 
  assembler --- 
  linker --- 
  binary

We talked about processes (programs in action)

  ps - process status
  top - show currently active processes
  pid - process id

We talked about signals, and killed many cats in various odd yet specific ways. We used:

kill-1 
kill-2 
kill-3
kill-4 
kill-7

Played with grep, sed, and cut

  ps aux | grep irssi | wc -l
  -counts how many irrssi 
  ps aux | grep irssi | grep -v grep | wc -l
  -counts how many irssi with out grep in it
  ps aux | grep irrssi | grep -v grep | sed 's/  */ /g'
  - removes all spaces
  ps aux | grep irrssi | grep -v grep | sed 's/  */ /g' | cut -d' ' -f1,5
  -cuts out lines except 1 and 5

What is the question you'd like to pose for experimentation? State it here.

Collect information and resources (such as URLs of web resources), and comment on knowledge obtained that you think will provide useful background information to aid in performing the experiment.

Based on what you've read with respect to your original posed question, what do you think will be the result of your experiment (ie an educated guess based on the facts known). This is done before actually performing the experiment.

State your rationale.

How are you going to test your hypothesis? What is the structure of your experiment?

Perform your experiment, and collect/document the results here.

Based on the data collected:

• Was your hypothesis correct?
• Was your hypothesis not applicable?
• Is there more going on than you originally thought? (shortcomings in hypothesis)
• What shortcomings might there be in your experiment?
• What shortcomings might there be in your data?

What can you ascertain based on the experiment performed and data collected? Document your findings here; make a statement as to any discoveries you've made.

client/server model designed to operate in a networked environment
- relationship of cooperating programs in an application
- server compnoent provides a function or service to one of many clients

X X Window System X11 X11R6/X11R7

Learned about the LAIRwall

Wall 01.offbyone.lan:0
Wall 02.offbyone.lan:0
Wall 03.offbyone.lan:0
Wall 04.offbyone.lan:0
Wall 05.offbyone.lan:0
Wall 06.offbyone.lan:0

Learned to xeyes on another computer (redirected xeyes to other screens) Also learned about oneko

Learned about more commands : head, tail, paste, join, diff, patch, comm… We learned to filter data with the commands.

Head - outputs the first part of the file

1. last | grep cgaines | head -3

Tail - output the last part of the files

1. last | grep cgaines | tail -3

Networking - communication amoung devices between a common medium using common protocols.

  Standard - the way things should be done (English)
           - OSI module
  Protocol - set of rules (Northern Midland American English)
           - TCP/IP 
               - Application
               - Transport
               - Networking
                 - IP address (IPv4) 32-bit ~4.2 billion
                       - /sbin/ifconfig  10.80.2.38
                                 - 10 =
                                 - 80 = lair
                                 - 2  = subnet
                                 - 38 = unique node number
                       - show/manipulate routing, devices, policy routing and tunnels
                       - CCC ip 143.66.x.y (65,000 routable IPs)
               - Data Link

Will changing a relevant command in VI by a character completely change the outcome?

I just used techniques used in class to perform this experiment and then started manipulating the commands with no prior knowlegde of what the outcome would be.

My Hypothesis is that by changing one character in the command will change the information

I am going to type up some lines in VI and then I am going to input the command.

Using the command :%s/b/BB/g- this took all of the b's in the entire document and changed them to a BB.

My name is BoBB and we had a BBaBBy its a BBoy, and charlie the unicorn and very funny. Billy BBoBB, is a hillBBilly, and a BBig one at that. Watching Hogan's Heroes and Hogan always seems to get the girls. BoBB we had a BBaB By its a very BBig BBoy.

Based on the data collected:

Yes my hypothesis is correct, it shows that just changing one character out of the original command will change the result.

By doing this command I found out the many possibilities could happen when manupulating commands in VI.