As an aid, feel free to use the following questions to help you generate content for your entries:

• What action or concept of significance, as related to the course, did you experience on this date?

I learned how to use the ls utility.

* Why was this significant?

The significance of this is that I now know how to create a file listing within my current working directory.

* What concepts are you dealing with that may not make perfect sense?

The arguments to the ls utility.

* What challenges are you facing with respect to the course?

Remembrance of all the commands that need to be used.

As an aid, feel free to use the following questions to help you generate content for your entries:

• What action or concept of significance, as related to the course, did you experience on this date?

Learned how to use the man(Manual) utility.

* Why was this significant?

This is significant because the manual pages provides in depth information about the requested command or allows users to search for commands related to a particular keyword.

* What concepts are you dealing with that may not make perfect sense?

How to successfully use the man command.

* What challenges are you facing with respect to the course?

Learning the arguments with certain commands.

As an aid, feel free to use the following questions to help you generate content for your entries:

• What action or concept of significance, as related to the course, did you experience on this date?

Learned how to use the file command.

* Why was this significant?

This is significant because the file command tells me what type of file you are looking at is.

* What concepts are you dealing with that may not make perfect sense?

The arguments to the file command.

* What challenges are you facing with respect to the course?

Dealing with compressed files, such as gzip.

As an aid, feel free to use the following questions to help you generate content for your entries:

• What action or concept of significance, as related to the course, did you experience on this date?

Learned how to use the wc(Word Count) command.

* Why was this significant?

This is significant because it gives you a word,line, and character count within the certain file.

* What concepts are you dealing with that may not make perfect sense?

Options such as “head”, and “tail” to use them correctly.

* What challenges are you facing with respect to the course?

Challenges that are facing me with respect to the course is using commands to a certain order.

What is the question you'd like to pose for experimentation?

Is there anyway of comparing two separate files?

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.

My information was provided from Harley Hahn's Guide To Unix and Linux, Chapter 17: Filters: Comparing and extracting.

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.

If there is a way of comparing two different files, then there is a command to do such act.

State your rationale.

My rationale was provided from my curiosity in which of finding the differences between two files.

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

I'm going to test my hypothesis by conducting an experiment using two different files, preferably text files. And using the “cmp” or “comm” commands to differentiate those two files.

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

In my shell directory consisted multiple text files from a previous assignment. This worked perfectly for my experiment being conducted. Thus using the “comm” utility I conducted the experiment on multiple occasions. Once again the “comm” utility finds differences between the two files. Thus at the prompt it looked like this: lab46:~/shell$ comm file1 filea. Entering such command I got a return of “More text …”. This is because inside file1 consists the words “More text …” and filea is an empty file. Thus, the difference was “More text …” just as “comm” told me. Another showing of how “comm” works is that when trying to find the differences between file2 and fileZZZ using the utility “comm” was quite useful. Thus the command was “lab46:~/shell$ comm file2 fileZZZ”. The return of that command was “file1”, “file1234”. Thus the differences between those two files were “file1” and “file1234”.

Based on the data collected:

• Was your hypothesis correct?

Yes, my hypothesis was correct.

• Was your hypothesis not applicable?

My hypothesis was applicable.

• Is there more going on than you originally thought? (shortcomings in hypothesis)

There was more to the return prompt than I originally thought.

• What shortcomings might there be in your experiment?

The usage of only using two text files, rather than using other files types also.

• What shortcomings might there be in your data?

My data is centered around two text files, though other file types can be used.

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.

My conclusions to this experiment is that it can be very helpful when comparing different files. Though questions did arise when conducting the experiment. For instance, can you compare different directories, not just files. And, is there a way of comparing more than just two files at once, possibly three if not four files at once.

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

Is there anyway you can combine multiple files, but save the output in a different file?

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.

My information was provide from Harley Hahn's Guide to Unix and Linux, Chapter 16: Filters: Introductions and Basic Operations.

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.

If it is possible to combine multiple files, but save the output in a different file, then file management will be a much smaller and easier process.

State your rationale.

My rationale was that of in which I was curious that in Unix there was a way of combining multiple files into one.

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

Im am going to test my hypothesis by using the same files, and directory, as in experiment one (~/shell$). And I am planning on copying multiple files and combining them all into a seperate file within that directory. This can be done using the cat command.

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

Doing this experimented was conducted using the cat command, under the syntax of “cat file file2 file3 > file4”. Thus, my syntax looked very similar to that, considering I had similar file names. My command looked like “lab46:~/shell$ cat file1 file2 file3 > fileC”. I copied all the text files into a new file called “fileC”. When listing the files in the directory using the ls command it was clear I had created the “fileC” file. Though, did everything copy into it? Using the cat command once again I looked the file. Using the command “cat fileC” I could see what “fileC” contained. After running the program it had given me a return of “More text …”, “file1”, and “file1234”. This clearly showed that when I had copied all those files previously that the contents also copied over into the new “fileC” file. Thus, the cat program ran correctly as planned.

Based on the data collected:

• Was your hypothesis correct?

Yes, my hypothesis was correct.

• Was your hypothesis not applicable?

My hypothesis was applicable.

• Is there more going on than you originally thought? (shortcomings in hypothesis)

Using file system converters like > was unexpected before I had conducted the experiment.

• What shortcomings might there be in your experiment?

Shortcomings that might be in my experiment is that I only used a certain type of file was used, text files.

• What shortcomings might there be in your data?

Shortcomings that might be in my data is that I only used a certain type of file was used, text files.

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.

My conclusions for this experiment is that it can be very helpful when trying to clear up a directory. Making the directory look a lot nicer by combining files into one. Though the cat command used in this experiment is not the only once you could use, there are other available at your disposal.

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

Is there a way of converting a certain text file into octal and or hexadecimal format?

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.

My information came from Harley Hahn's Guide to Unix and Linux, Chapter 21: Displaying Files: Binary, Octal and Hexadecimal.

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.

If there is a text file within a directory, then there is a way to convert that text file into octal and or hexadecimal format.

State your rationale.

My rationale was that of the curiosity in which if it was possible to convert a text file into octal and or hexadecimal format.

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

I am going to test my hypothesis by converting simple text files over into octal and hexadecimal format. This will be done using the commands “od” (octal dump), and “hexdump” (hexadecimal dump), and text files within the shell directory.

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

Running the commands “od” and “hexdump” on both the files “file1” and “file2” within the directory ~/shell$. Thus the commands looked like this: “od file1”, “hexdump file1”, and “od file2”, “hexdump file2”.

My data for this experiment went as followed:

“od file1”: → 0000000 067515 062562 072040 074145 020164 027056 005056005012 0000020 072012 064541 005154 0000026

“hexdump file1”: → 000000 6f4d 6572 7420 7865 2074 2e2e 0a2e 0a0a 0000010 740a 6961 0a6c 0000016

“od file2”: → 0000000 064546 062554 005061 064546 062554 031061 032063 000012 0000017

“hexdump file2”: → 0000000 6966 656c 0a31 6966 656c 3231 3433 000a 000000f

Based on the data collected:

• Was your hypothesis correct?

Yes, my hypothesis was correct.

• Was your hypothesis not applicable?

My hypothesis was applicable.

• Is there more going on than you originally thought? (shortcomings in hypothesis)

The experiment went as planned, no unexpected occurrences happened.

• What shortcomings might there be in your experiment?

Shortcomings in my experiment would be that I had only used text files rather than using other file types.

• What shortcomings might there be in your data?

Shortcomings in my data would be that I had only used text files rather than using other file types.

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.

My conclusions on this experiment is that these commands can be very helpful if that you are looking the view the octal and or hexadecimal values of a certain text file. Though during this experiment I wondered that are the “od” and “hexdump” commands limited to just text files? Can they unwind other file types into their decimal values?

As an aid, feel free to use the following questions to help you generate content for your entries:

• What action or concept of significance, as related to the course, did you experience on this date?

Learned how to change file permissions, using chmod command.

* Why was this significant?

This is significant because it lets you change the file to what you want it to be. For instance if the file is read only, you could possible change that so you can also write to the file.

* What concepts are you dealing with that may not make perfect sense?

The numbering systems involved with chmod.

* What challenges are you facing with respect to the course?

Remembrance off all the chmod possibilities involved with file changes.

As an aid, feel free to use the following questions to help you generate content for your entries:

• What action or concept of significance, as related to the course, did you experience on this date?

Learned how to display currently running processes, using the ps(1) command.

* Why was this significant?

The significance of this is that it tells you what programs are running at the current moment, and their computing information, such as PID's and CPU usage.

* What concepts are you dealing with that may not make perfect sense?

Arguments to the ps(1) command.

* What challenges are you facing with respect to the course?

Using the cron command.

As an aid, feel free to use the following questions to help you generate content for your entries:

• What action or concept of significance, as related to the course, did you experience on this date?

Learned how to compile/assemble source files into executables.

* Why was this significant?

This is significant because now I can run C code from an executable file.

* What concepts are you dealing with that may not make perfect sense?

Arguments involved with gcc/g++ compilers.

* What challenges are you facing with respect to the course?

Creating files that need to be compiled at a later date.

As an aid, feel free to use the following questions to help you generate content for your entries:

• What action or concept of significance, as related to the course, did you experience on this date?

Learned how to use the grep command.

* Why was this significant?

This is significant because the grep command will find text within a certain file for you.

• What concepts are you dealing with that may not make perfect sense?

Using wildcard helpers with grep.

* What challenges are you facing with respect to the course?

The usage of wildcards to have successful data results.

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

Is there anyway display commands from a history list and then re execute a command from the history list?

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.

My information came from Harley Hahn's Guide to Unix and Linux, Chapter 13: Using the Shell: Commands and Customization.

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.

If there is a way to display commands from a history list, then I can re execute those commands from the history list using another command.

State your rationale.

My rationale involving my experiment was that of the curiosity in which I could look back in time to see what commands I have used.

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

During this experiment I will be running the command, “history”, to display commands from the history file. From there I will be the commands “!” and “!!” to perform different needed tasks. The command “!” will re execute a certain command number from the history list. While, “!!” will re execute the last command used from the history list.

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

When running the “history” I get a listing from the command numbers used of 321 to my most current command 533 or history. If I run the “!” command, for example of line 521, which was a “ls” command used earlier. The prompt would look like this “!521”, thus if done right an listing of files should have appeared in your home directory, just as the ls was directed for earlier. The format for the “!” goes as the following “!filename”. Since the “!!” will re execute the last command in the history list, the same ls should appear if you had used the “!!” command. If all completed right you would have two file listings of your home directory in visible sight.

Based on the data collected:

• Was your hypothesis correct?

Yes, my hypothesis was correct.

• Was your hypothesis not applicable?

My hypothesis was applicable.

• Is there more going on than you originally thought? (shortcomings in hypothesis)

The command worked just as I thought it would have.

• What shortcomings might there be in your experiment?

There are no foreseen shortcomings in my experiment.

• What shortcomings might there be in your data?

There are no foreseen shortcomings in my 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.

In conclusion using the history command can be very useful if you had forgotten a certain command used a while back. Also the “!” command can be a quick way to use that same forgotten command if you don't want to retype out that command.

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

Is there a way to run programs at a lower priority in comparison to other programs running?

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.

My information came from Harley Hahn's Guide to Unix and Linux, Chapter 26: Processes and Job Control.

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.

If there is a way to run programs at a lower priority then what command can be used to do such actions.

State your rationale.

My rationale for this question is that when running multiple commands, how can you prioritize which needs more priority over the other.

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

I am going to test my hypothesis by running a command and setting it to run in the background. Then run another program. Using the ps utility check out the %CPU usage for the commands used. And hello and hello2 as the desired executable. I will be using the files hello.c and count.c as the files with the program source code.

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

To run programs at a lower priority use nice(1).

Syntax: nice [-n adjustment] command.

However, nice will not automatically run the program in the background. You will need to do that yourself by typing an & character at the end of the command.

lab46:~$ nice gcc -o hello hello.c &
[1] 13842
lab46:~$ gcc -o hello2 count.c
lab46:~$ ps
USER      PID    %CPU %MEM VSZ    RSS   TTY     STAT START  TIME COMMAND
tedmist1  13123  1.0  0.1  13628  1956  pts/74  SNs  12:53  0:00  -bash
tedmist1  13955  0.0  0.0   8588   996  pts/74  RN+  14:07  0:00  ps u
tedmist1  13465  2.0  0.1   9525   992  pts/74  RN+  14:07  0:00  nice gcc -o hello hello.c &
tedmist1  13812  1.1  0.0   8678   994  pts/74  RN+  14:07  0:00  gcc -o hello2 count.c

Based on the data collected:

• Was your hypothesis correct?

Yes, my hypothesis was correct.

• Was your hypothesis not applicable?

My hypothesis was applicable.

• Is there more going on than you originally thought? (shortcomings in hypothesis)

More commands were needed to be used than I originally thought I had to use.

• What shortcomings might there be in your experiment?

I had only ran two programs while there could have been more

programs running at once, thus making my experiment more applicable.

• What shortcomings might there be in your data?

I used the gcc compiler only, I could have used the g++ compiler. Possibly could have gotten different results, thus different 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.

From my experiment, provided above, I can say that I know now how to set commands, while running in the background, to a lower priority over other commands running. This can be very helpful if you have a program that can run in the background and which uses a large amount of CPU time. Using the nice(1) utility provides that the program have a reduced amount of CPU usage. Thus, leaving other programs to use that CPU speed.

Perform the following steps:

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

I will be retesting Reid Hensen's Experiment 3 in Part One.

http://lab46.corning-cc.edu/opus/spring2012/rhensen/start

Question: Is it possible to remove a directory by deleting the . file that is contained within the directory?

Evaluate their resources and commentary. Answer the following questions:

• Do you feel the given resources are adequate in providing sufficient background information?

I do not, no resources were provided for the experiment.

* Are there additional resources you've found that you can add to the resources list?

I would add Chapter 25: Working with Files, found in Harley Hahn's Guide to Unix and Linux.

* Does the original experimenter appear to have obtained a necessary fundamental understanding of the concepts leading up to their stated experiment?

Yes, I do believe the original experimenter appeared to have an understanding of the concepts prior their experiment.

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

Their experiment's hypothesis: “Each directory contains two files which are ”.” and ”..”. The . file refers to the directory itself and the .. file refers to the parent of that directory. These files are in each directory to allow the Unix shell to use relative path names. I believe that if the . file is removed, this would logically cause the current working directory to be deleted. It would seem to be a problem if Unix allowed the user to do this, which is why I believe that removing directories cannot be done in this way.”

• Do you feel their hypothesis is adequate in capturing the essence of what they're trying to discover?

Yes, I do believe so.

* What improvements could you make to their hypothesis, if any?

Make it shorter and to the point. No need for a lengthy hypothesis.

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

• Are the instructions correct in successfully achieving the results?

Yes, the instructions are correct in achieving the results.

* Is there room for improvement in the experiment instructions/description? What suggestions would you make?

No, the instructions are straight forward and easy to follow.

* Would you make any alterations to the structure of the experiment to yield better results? What, and why?

No, I would not do so because there is no changing what the experiment can entitle. Different results are not obtainable for this experiment.

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

lab46:~/test$ rm .
rm: cannot remove `.': Is a directory
lab46:~/test$ rmdir .
rmdir: failed to remove `.': Invalid argument

Answer the following:

• Does the data seem in-line with the published data from the original author?

Yes, the data is in-line with the published data from the original author.

* Can you explain any deviations?

No deviations in data.

* How about any sources of error?

No sources of error, besides the ones in experiment.

• Is the stated hypothesis adequate?

The stated hypothesis is adequate.

Answer the following:

• What conclusions can you make based on performing the experiment?

The started hypothesis was correct on the results of the experiment.

* Do you feel the experiment was adequate in obtaining a further understanding of a concept?

No, no further knowledge was learned from this experiment.

* Does the original author appear to have gotten some value out of performing the experiment?

The knowledge that you cannot remove your current working directory.

* Any suggestions or observations that could improve this particular process (in general, or specifically you, or specifically for the original author).

No suggestions to be made or needed in this experiment.

As an aid, feel free to use the following questions to help you generate content for your entries:

* What action or concept of significance, as related to the course, did you experience on this date?

On this date I learned how to use the dd(1), data dump utility.

* Why was this significant?

This is significant because with the usage of the dd(1) utility I can take data from a source file then deposite it in a destination file.

* What concepts are you dealing with that may not make perfect sense?

Concepts of this utility that do not make perfect sense is the syntax involved. The “if” and “of” that need to be implemented do not make a lot of sense to me.

* What challenges are you facing with respect to the course?

When to use this utility as opposed to using the pipe ( | ) utility.

As an aid, feel free to use the following questions to help you generate content for your entries:

* What action or concept of significance, as related to the course, did you experience on this date?

In the VI editor I learned how to change some certain syntax on a larger scale.

* Why was this significant?

This is significant because if you are trying to change multiple of the same words it be hassle just to find each showing of that word, while you could use “:/word” to change an existing word.

* What concepts are you dealing with that may not make perfect sense?

The syntax involved the cat | grep | sed | sed command.

* What challenges are you facing with respect to the course?

Writing proper scripts to complement the right criteria asked in the question.

As an aid, feel free to use the following questions to help you generate content for your entries:

* What action or concept of significance, as related to the course, did you experience on this date?

On this day I learned how to use the cut(1) utility productively to my uses.

* Why was this significant?

This is significant because this utility will help me cut out unnecessary information that I do not wish to look at, when viewing a string of data.

* What concepts are you dealing with that may not make perfect sense?

A concept that I am dealing with that does not make perfect sense is the sed(1) utility, more or less the syntax involved with the command.

* What challenges are you facing with respect to the course?

Some challenges that I am facing is using the the grep(1) head(1) and tail(1) all at once, but in useful manner.

As an aid, feel free to use the following questions to help you generate content for your entries:

* What action or concept of significance, as related to the course, did you experience on this date?

Learned how to change a file into something that is viewable upon different operating systems. Using the tr(1) utility helped me do this.

* Why was this significant?

This is significant reading a different operating systems file, such as mac o.s., is not possible upon a Unix system. Thus, we must change the file ending to do so.

* What concepts are you dealing with that may not make perfect sense?

Concepts that do not make perfect sense to me is the syntax involved with the tr(1) utility.

* What challenges are you facing with respect to the course?

Analyzing shell script logic.

Is there a command to search through all the one-line command descriptions, while looking for those that contain the same string of characters you specified.

Harley Hahn's Guide to Unix and Linux. Chapter 9: Documentation : The Unix Manual and Info.

If there is a way to search through all the one-line command descriptions, while looking for those that contain the same string of characters you specified, then there is a command to do such things.

State your rationale.

My curiosity to search through a line of string of characters blindly for a desired result.

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

I am going to test my hypothesis by running the command with a certain file. The structure of this will be used within the syntax lines of apropos.

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

Apropos's syntax is: apropos keywords

lab46:~$ apropos pstree
pstree (1)           - display a tree of processes
pstree.x11 (1)       - display a tree of processes

Based on the data collected:

* Was your hypothesis correct?

Yes my hypothesis was correct

* Was your hypothesis not applicable?

My hypothesis was applicable * Is there more going on than you originally thought? (shortcomings in hypothesis)

The command gives a larger listing than I once thought.

* What shortcomings might there be in your experiment?

In need to use different keywords.

* What shortcomings might there be in your data?

Only the use of one keyword, pstree.

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.

Based on the data collected, and the experiment, the command apropos(1) can be used to find a listing of commands based upon a certain keyword. This command produced a longer listing of commands, based on the certain keyword, than I thought before the conducted experiment had happened.

Is there a way to show a process diagram that shows the connections between the files and the folders?

Harley Hahn's Guide to Unix and Linux. Chapter 26: Processes and Job Control.

If there is a way to show a process diagram that shows the connections between the files and the folders then there must be a command to do so.

State your rationale.

A visual diagram to show the connections can be very helpful when trying to locate a certain item that can be linked.

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

I am going to test my hypothesis by running the command. The structure of my experiment will be just run the command and assess the result.

Perform your experiment, and collect/document the results here. pstree (process tree): useful when you want to understand the relationships between processes.

lab46:~$ pstree
init-+-atd
     |-avahi-daemon---avahi-daemon
     |-cron-+-cron---sh---launchbot.sh---python---python---{python}
     |      |-cron---sh---sh---python---python---2*[{python}]
     |      |-cron---sh---botscript.sh---python---python---{python}
     |      |-cron---sh---sh---python---python---29*[{python}]
     |      `-cron---botstart.sh---python---python---{python}
     |-dbus-daemon
     |-dhclient
     |-3*[eggdrop]
     |-getty
     |-inetd
     |-links
     |-nscd---7*[{nscd}]
     |-ntpd
     |-nullmailer-send
     |-portmap
     |-python---python---{python}
     |-python---{python}
     |-rpc.idmapd
     |-rpc.statd
     |-36*[screen---bash---irssi]
     |-2*[screen---irssi]
     |-screen---bash---screen
     |-screen-+-bash
     |        `-bash---screen
     |-3*[screen-+-bash]
     |           `-bash---irssi]
     |-3*[screen---bash]
     |-screen-+-3*[bash]
     |        `-2*[bash---irssi]
     |-screen-+-bash---tar---tar---gzip
     |        `-bash---vim---{vim}
     |-screen---2*[bash]
     |-screen-+-bash---irssi
     |        `-bash
     |-screen-+-2*[bash---irssi]
     |        |-3*[bash]
     |        `-4*[bash---ssh]
     |-screen---5*[bash]
     |-screen---4*[bash---vi---{vi}]
     |-screen-+-bash---bash---ssh
     |        |-3*[bash]
     |        |-bash---vi---{vi}
     |        `-bash---irssi
     |-sshd-+-5*[sshd---sshd---bash]
     |      |-sshd---sshd---bash---pstree
     |      |-sshd---sshd---bash---screen
     |      `-sshd---sshd---bash---vim---{vim}
     |-syslog-ng---syslog-ng
     |-tfe---daemon
     `-udevd---2*[udevd]

Based on the data collected:

* Was your hypothesis correct?

Yes, my hypothesis was correct.

* Was your hypothesis not applicable?

My hypothesis was applicable. * Is there more going on than you originally thought? (shortcomings in hypothesis)

The command produced a longer hierarchy list than I once thought.

* What shortcomings might there be in your experiment?

Only the production of a process tree in a single directory.

* What shortcomings might there be in your data?

Only the production of a process tree in a single directory.

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.

Based upon my experiment and data collected pstree can be a very helpful utility if trying to understand relationships between processes. Something that had surprised me was that there were a lot more processes going on that I thought would be.

Perform the following steps:

Reid Hensen Part 1: Experiment 2

http://lab46.corning-cc.edu/opus/spring2012/rhensen/start#experiment_1

“Can output redirection be used with aliases in order to easily create a log file from the output of a certain command?”

Evaluate their resources and commentary. Answer the following questions:

* Do you feel the given resources are adequate in providing sufficient background information?

No, since it was just one web page of information.

* Are there additional resources you've found that you can add to the resources list?

Harley Hahn's Guide to Unix and Linux. Chapter 24: Working with Directories.

* Does the original experimenter appear to have obtained a necessary fundamental understanding of the concepts leading up to their stated experiment?

Yes, he does.

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

“A log file is sometimes useful to keep a record of the output generated by the output of a command. However, this is really only useful when the output is added to the log file automatically, which is why I believe the use of the alias will be helpful. I think that setting an alias for the ls command that will redirect the output to a file will effectively keep a record of each output that command generates. This is not to say that the ls command is the most useful command to have a log file associated with, but the method can hopefully be used with other command that better lend themselves to having a log.”

* Do you feel their hypothesis is adequate in capturing the essence of what they're trying to discover?

Yes, I do.

* What improvements could you make to their hypothesis, if any?

Make it shorter and to the point.

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

* Are the instructions correct in successfully achieving the results?

Yes, I got a similar results. User name changes.

* Is there room for improvement in the experiment instructions/description? What suggestions would you make?

No, this is a pretty straightforward experiment, no needs for change.

* Would you make any alterations to the structure of the experiment to yield better results? What, and why?

No alterations to be needed to yield better results.

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

lab46:~$ alias ls="ls | tee -a /home/tedmist1/log"

Answer the following:

* Does the data seem in-line with the published data from the original author?

Yes.

* Can you explain any deviations?

No deviations appeared.

* How about any sources of error?

No sources of error.

* Is the stated hypothesis adequate?

The stated hypothesis is adequate.

Answer the following:

* What conclusions can you make based on performing the experiment?

By conducting such an experiment my knowledge towards the ls command has increased. With the help of redirection of a file, such a task became that much easier.

* Do you feel the experiment was adequate in obtaining a further understanding of a concept?

I obtained a further understanding of the concept by conducting the experiment.

* Does the original author appear to have gotten some value out of performing the experiment?

Yes, they did seem to get 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).

No improvements to be made upon such an experiment.