Part 2

Today we went over regular expressions in class. We reviewed and played with basic regular expressions that one may encounter. I am starting to get a good feel for the regular expressions and with a little more practice, I should be fairly comfortable with using them. The biggest difficulty i can foresee with this is knowing precisely what I want to do with them but this is common for all new tools.

This week we learned some new things with regular expressions. Normally we would use a command like cut or grep to pick apart data and choose what we want to show. But with the regular expressions we were able to be even more precise in a more concise manner as well. They are a little hard to grasp because the concepts are kind of obscure, but for the most part i understand how they work. I just need to work with them more in my shell scripting or just in general like in my programs as well. We also did a script that will extract the data from our opus. It takes the total score you can get, the score you got and what percentage you recieve. We wrote that and added more on like cutting off the many decimal points after or similar stuff. We used some regular expressions in it as well which is really confusing but if i pick it apart piece by piece i can understand it.

Today we talke a little about wildcards and how to use them. I had read about them in in one of the books but had not played with them on my own. Today's class allowed me to see them in action. I see that they are very similar to regular expressions but with minor differences. The same basic principles applied to regular expressions can be applied to wildcards keeping in mind what symbols are used for what and when they can be used appropriatetly.

Today I brought in my laptop because there was an issue with java on it and i wanted to be able to run Minecraft. In case you didn't know Minecraft is a fantastical game where you can DO WHATEVER THE HELL YOU WANT!!!!! Sounds to good to be true right? Wrong. I myself am building an awesome Castle of Darkness. Anywho today we just worked on some more C programming which was not too difficult to understand.

A computer that resides in some distant location from which data are retrieved. It typically refers to a server in a private network or the public Internet.

The current directory is the directory in which a user is working at a given time.

lab46:~$ 

An archive is a collection of computer files that have been packaged together for backup, to transport to some other location, for saving away from the computer so that more hard disk storage can be made available, or for some other purpose.

lab46:~$ archive1

Compressing files give you more storage space when using your OS, because it condenses the file down. Compressing a file can involve certain file extensions such as: .tar .zip .gzip etc.

lab46:~$ badname.tar

In order to view files it depends on what type of file you want to view. You might have to use cd, cat, ./, etc.

lab46:~$ cat ascii

lab46:~$ cd closet

lab46:~$ ./burninator

This is the greatest text editor EVAR!

There are certain commands to enter Insert Mode, but once you are in this mode it will tell you at the bottom. And once here you can type out anything that needs to be typed as well as creating programs that can be run once you change the permissions.

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-- INSERT --                                                            0,1           All

This is the starting area when you create a VI text. In here there are keys that do specific actions that can help you in creating/editing what you want in your VI text.

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"alpha" [New File]                                                      0,0-1             All

The extended command mode begins with the colon : and from there you can add things like a number line or color. You can also save your work or discard when in this mode.

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:q

The PATH environment variable is a colon-delimited list of directories that your shell searches through when you enter a command.

lab46:~$ echo $PATH
/home/qclark/bin:/usr/local/bin:/usr/bin:/bin:/usr/bin/X11:/usr/games

A wildcard is a symbol that takes the place of an unknown character or set of characters. These characters are: ?, *, [], [^ ]

lab46:~$ grep '^r.*$' *d

Job control facilities allow you to have the system work on a job in the background while you do something else at the keyboard.

The ability to accomplish/automate tasks.

State the method you will use for measuring successful academic/intellectual achievement of this objective.

Follow your method and obtain a measurement. Document the results here.

Reflect upon your results of the measurement to ascertain your achievement of the particular course objective.

• How did you do?
• Room for improvement?
• Could the measurement process be enhanced to be more effective?
• Do you think this enhancement would be efficient to employ?
• Could the course objective be altered to be more applicable? How would you alter it?

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.

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.

If you're doing an experiment instead of a retest, delete this section.

If you've opted to test the experiment of someone else, delete the experiment section and steps above; perform the following steps:

Whose existing experiment are you going to retest? Prove the URL, note the author, and restate their question.

Evaluate their resources and commentary. Answer the following questions:

• Do you feel the given resources are adequate in providing sufficient background information?
• Are there additional resources you've found that you can add to the resources list?
• Does the original experimenter appear to have obtained a necessary fundamental understanding of the concepts leading up to their stated experiment?
• If you find a deviation in opinion, state why you think this might exist.

State their experiment's hypothesis. Answer the following questions:

• Do you feel their hypothesis is adequate in capturing the essence of what they're trying to discover?
• What improvements could you make to their hypothesis, if any?

Follow the steps given to recreate the original experiment. Answer the following questions:

• Are the instructions correct in successfully achieving the results?
• Is there room for improvement in the experiment instructions/description? What suggestions would you make?
• Would you make any alterations to the structure of the experiment to yield better results? What, and why?

Publish the data you have gained from your performing of the experiment here.

Answer the following:

• Does the data seem in-line with the published data from the original author?
• Can you explain any deviations?
• How about any sources of error?
• Is the stated hypothesis adequate?

Answer the following:

• What conclusions can you make based on performing the experiment?
• Do you feel the experiment was adequate in obtaining a further understanding of a concept?
• Does the original author appear to have gotten some value out of performing the experiment?
• Any suggestions or observations that could improve this particular process (in general, or specifically you, or specifically for the original author).