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Posted: February 26th, 2022
You will learn about compression utilities speed vs compression rate.
Objectives:
You will learn about compression utilities speed vs compression rate.
Instructions:
Time Required: 30 minutes
Use Ubuntu VM or Subsystem to create a new directory with the name ec4 Navigate to the new directory Take a screenshot
Create a new text file and name it mylargefile.txt and type your first and last name 100 times in the created text file as follows:
Take a screenshot then save the large text file and Exit.
Tar the large text file “mylargefile.txt” using the three utilities learned in lesson
11 by typing:
tar -czf gzarchive.tar.gz mylargefile.txt tar -cjf bz2archive.tar.bz2 mylargefile.txt tar -cJf xzarchive.tar.xz mylargefile.txt
Take a screenshot showing all three commands above.
Type ls -la to get a detailed view of your files and Take a screenshot
What is the size of each one of the three compressed archives (gzarchive.tar.gz, bz2archive.tar.bz2, xzarchive.tar.xz) in Kilobytes ? _______________________________________________________________
_______________________________________________________________
Run the following commands to check the compression time using the three compression utilities:
time bzip2 -1v bz2archive.tar.bz2
time gzip -1v gzarchive.tar.gz
page1image10817280 page1image10817472 page1image4541280 page1image10817664 page1image10817856page1image10818048
time xz -1v xzarchive.tar.xz Take a screenshot
page1image10818240
IS 552/452 Unix Operating System Principles Spring 2022
8. Rank all three utilities (gzip, bizp2, and xz) according to their compression time from faster to slower.
________________________________________________________________
______________________________________________________________
What to Submit
Submit all Screenshots and answers to questions in a word document and upload your document
Rubric
5 screenshots = 75 points
2 questions = 25 points (12.5 each)
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