Part 2

work day. opus,projects,unix.

Project on puzzle box is done for the most part. working on next.

After reading up on bash scripting. I made two programs displayed on a web page. while exploring such avaneus I made one from scratch. leaning to keep track of typos is the hard part.

This is a sample format for a dated entry. Please substitute the actual date for “Month Day, Year”, and duplicate the level 4 heading to make additional entries.

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?
• Why was this significant?
• What concepts are you dealing with that may not make perfect sense?
• What challenges are you facing with respect to the course?

Remember that 4 is just the minimum number of entries. Feel free to have more.

crrerats FIFO's (also called “named pipes”) with the specified names.

aseIf you want to demonstrate something on the command-line, you can do so as follows:

a term created by programmers that state mandates a programmer, or comp user of UNIX/ Linux based systems must at least try to find a answer to their problems. This must be done before asking a more experienced programmer.

R- read
T- the
F- ****
M- manual 

A metacharacter is a character that has a special meaning (instead of a literal meaning) to a computer program, such as a shell interpreter or a regular expression engine.

The export command is used to define the variable as one that subshells (shells spawned from the original) should inherit.

rlott@lab46:~$ export PAGER
rlott@LAB46:~$

a command built into the bc program. this command is used to display the output of mathematical computations in binary, octal, base 10, etc.

If you want to demonstrate something on the command-line, you can do so as follows:

A FIFO special file is similar to a pipe, except that it is created in a different way. Instead of being an anonymous communications channel, a FIFO special file is entered into the file system by calling mkfifo.

print- command

files, space for storage of more data, directories, programs.

Mainly the 'cli' set on a visual screen for user interface.

This directory contains the commands and utilities that you use day to day. These are executable binary files aka bin.

standard terminal emulator for the X Window System

Scripting with bash and programming concepts. using bash in the vi editor to write the program code. successful execution of the {chmod} command in order to change the file format from rw, read-write. To a executable format via program file.

after a well developed presentation on the inner working of bash, vi, aka vim, and the method of programming. One could have a assignment that leave the class to explore and change the outcome or multiple outcomes of the program.

my irc chat bot was deleted by mistake so here is a quick dummy program.
Lable: loop
objective of program- take the $who command and pipe to $less for display.

change to program: The who command piped into the vi text editor.

lrwxrwxrwx 1 rlott lab46     15 Aug 28 10:37 Maildir -> /var/mail/rlott
-rw-r--r-- 1 rlott lab46    237 Oct 25 14:57 archive1.tar.gz
-rw-r--r-- 1 rlott lab46    584 Oct 25 14:57 archive2.zip
drwxr-x--x 3 rlott lab46     79 Oct 25 15:37 archives
-rw-r--r-- 1 rlott lab46    309 Oct 25 15:42 archives.tar.bz2
drwxr-xr-x 2 rlott lab46      6 Sep 13 08:27 bin
-rw-r--r-- 1 rlott lab46      6 Sep  6 16:19 cake
drwxr-xr-x 2 rlott lab46      6 Sep  6 15:44 cloest
drwxr-xr-x 3 rlott lab46     70 Oct 13 16:10 closet
drwxr-xr-x 2 rlott lab46      6 Sep  6 15:28 coset
-rw-r--r-- 1 rlott lab46    681 Oct 25 21:31 courses.html
lrwxrwxrwx 1 rlott lab46     25 Oct  6 16:47 data -> /usr/local/etc/data/rlott
-rw-r--r-- 1 rlott lab46    752 Sep  6 16:12 e
-rwxr-xr-x 1 rlott lab46     26 Oct  6 15:37 echo.sh
-rw-r--r-- 1 rlott lab46  11221 Oct 25 15:44 ed
drwxr-xr-x 2 rlott lab46   4096 Sep 17 02:14 games
-rwxr-xr-x 1 rlott lab46   6569 Oct 13 16:20 hello
-rw-r--r-- 1 rlott lab46     75 Oct 13 16:20 hello.c
-rw-r--r-- 1 rlott lab46    409 Oct 13 15:41 hello.s
-rwxr-x--- 1 rlott lab46     78 Oct 23 20:07 homepro.sh
drwx------ 3 rlott lab46     16 Oct  6 15:41 irc
"ls-l.txt" 50L, 2632C

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

If i were a little more froggy, the program could be modified to pop up the same as the $motd to display who is on the sever. MAKING LIFE EASY.

can you have the command

 :date +%s 

be placed into a loop script to constantly count up to 23458789… in unix time?

vim, internet, linux, instruction from course booklet. google - most searching was based off this site.

Run the bash script while looking for syntax errors. If none the program should be a success. will the script run or will it be a dodo

The program runs. yet a error 4 line for is spammed while counting. why!!!

#!/bin/bash
while true
do
date= `date +%s`
     echo "$date"
     sleep 1
done
 echo `date +%s`

Based on the data collected: The program did count, forward in time, but the loop applied in the scripting has a continual count time. a error for line 4 was part of the display. all together, much of this experiment was a success.

I need to study more about scripting and program concepts. small errors and the ability to notice are my weak points. I still see bash scripting more fun and easy for windows command line. it“s a little more manual like a standard car.

can $who command be placed into a text file

google.com

If the who command can be placed in the less program, than is should work for the $vi text editor.

By simply changing the command named in the syntax out with the vi text editor. The process should be as successful as the first run with the less command.

#!/bin/bash
when= who | vi
        echo "have you seen my base ball"
        echo $WHO
        echo "yes or no"
        exit 0

first run

lab46:~$ ./test
Vim: Warning: Input is not from a terminal
Vim: Error reading input, exiting...
Vim: preserving files...
Vim: Finished.
have you seen my base ball

Based on the data collected: The process is different from the last.

Changes must be made to the program in order to have it work. the text file may need additional commands to fulfill the process applied.

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).