Objectives:

You will learn about compression utilities speed vs compression rate.

Instructions:

Time Required: 30 minutes

1. Use Ubuntu VM or Subsystem to create a new directory with the name ec4 Navigate to the new directory Take a screenshot
2. 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:
3. Take a screenshot then save the large text file and Exit.
4. 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.
5. Type ls -la to get a detailed view of your files and Take a screenshot
6. What is the size of each one of the three compressed archives (gzarchive.tar.gz, bz2archive.tar.bz2, xzarchive.tar.xz) in Kilobytes ? _______________________________________________________________
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7. 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

time xz -1v xzarchive.tar.xz Take a screenshot

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.

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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)