dox7

.docx

School

York University *

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Course

ITC5202

Subject

Economics

Date

Apr 3, 2024

Type

docx

Pages

1

Uploaded by ProfSeal8125

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1. Repeat exercise 5 using the file phone.gz , a compressed version of the list of names and phone numbers. Consider more than one approach to answer each question and explain how you made your choices. 2. Find or create files that a) gzip compresses by more than 80 percent. b) gzip compresses by less than 10 percent. c) Get larger when compressed with gzip . d) Use ls –l to determine the sizes of the files in question. Can you characterize the files in a, b, and c? a. gzip compresses by more than 80 percent. The gzip utility compresses most text files by more than 80 percent. b. gzip compresses by less than 10 percent. The gzip utility compresses most files that are already compressed, such as jpeg files, by less than 10 percent. c. Get larger when compressed with gzip. The gzip utility expands a file that has already been compressed with gzip. (To compress a gzipped file a second time, you must remove the .gz filename extension.) d. Use ls -l to determine the sizes of the files in question. Can youcharacterize the files in a, b, and c? Files with repeated information or inefficiently stored information can be compressed the most. Files that have been compressed already store information efficiently and can be compressed only a small amount, not at all, or negatively (expanded).
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