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Apr 3, 2024
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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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QUESTION FOUR
Study the following text and answer the questions below it.
How to Build a One-Match Campfire
Building a campfire that you can light with one match is simple if you follow these easy steps. The first step is to prepare a safe place for your campfire. Clear an area on the ground at least 3 feet wide, and put a circle of stones around it. Second, gather fuel. You will need several sizes of fuel: small twigs, medium sticks, and large sticks. The next step is to build a tepee. Put a handful of twigs in a small pile, and use the small sticks to build a small tepee over the pile. Leave spaces large enough to drop a lighted match through. Next, build a cabin around the tepee using the medium sticks. Fifth, place two large pieces of wood on either side of the cabin, and lay two or three long sticks on top to make a loose roof. The last step is to light a match and drop it through a space in the tepee. Soon you will enjoy the warmth of a nice fire, and your friends will admire…
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Study the following text and answer the questions below it.
How to Build a One-Match Campfire
Building a campfire that you can light with one match is simple if you follow these easy steps. The first step is to prepare a safe place for your campfire. Clear an area on the ground at least 3 feet wide, and put a circle of stones around it. Second, gather fuel. You will need several sizes of fuel: small twigs, medium sticks, and large sticks. The next step is to build a tepee. Put a handful of twigs in a small pile, and use the small sticks to build a small tepee over the pile. Leave spaces large enough to drop a lighted match through. Next, build a cabin around the tepee using the medium sticks. Fifth, place two large pieces of wood on either side of the cabin, and lay two or three long sticks on top to make a loose roof. The last step is to light a match and drop it through a space in the tepee. Soon you will enjoy the warmth of a nice fire, and your friends will admire your skill at…
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A B
C
D E
Destination
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40
60
50
A
10
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B
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с
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D
10
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E
80
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SEE MORE QUESTIONS
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