6. Compressing and Sorting in Linux

Question 1

What is an archive?

Answer 1

A set a files and folders located in a single file.

Question 2

What is tar used for?

Answer 2

To create an archive.

Question 3

What is gzip used for?

Answer 3

To compress or uncompress files.

Question 4

What is the extention of a tar file?

Answer 4

.tar

Question 5

What is the extention of a gzip file?

Answer 5

.gz

Question 6

What is the command to create an archive with tar?

Answer 6

tar -cf

Question 7

What is the color of an archived or compressed file?

Answer 7

red

Question 8

What is the command to read the content of a archive (tar file)?

Answer 8

tar -tf

Question 9

What is the command to create and compress a file with tar?

Answer 9

tar -czf

Question 10

What is the command to decompresse, extract and verbalise with tar?

Answer 10

tar -xvzf

Question 11

What is the command to sort by size and list files?

Answer 11

ls -S or ls –sort=size (largest first)

Question 12

What is the command to sort by time and list files?

Answer 12

ls –sort=time

Question 13

What is the command to sort by extentsion and list files?

Answer 13

ls –sort=extentsion

Question 14

What is the command to sort by version and list files?

Answer 14

ls –sort=version

Question 15

How to reverse the sorting while listing the files?

Answer 15

ls -r

Question 16

What is the command to sort STDIN?

Answer 16

sort

Question 17

What is the command to sort STDIN in reverse?

Answer 17

sort -r

Question 18

What is the command to save into a file the STDOUT of the sort command?

Answer 18

sort -o

Question 19

What is the command to sort numbers?

Answer 19

sort -n

Question 20

What is the command to sort unique values?

Answer 20

sort -u