Chapter 1 answers

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• What is the shell?

A type of computer user interface ( see What is Linux Shell )

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Q. Decide whether the following sentence is true or false:

1. True
2. False ( Kernel [ OS ] manages files and data. )
3. False ( see above )
4. True
5. False
6. True
7. True
8. True
9. True
10. True
11. True
12. False
13. True
14. True
15. True
16. True
17. True
18. True

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• Write a command names, which can display the files to the terminal.

ls

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• Write a command to list details of all files ending in '.perl' in reverse time order.

ls -r *.perl

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• Write a command to list your running programs.

ps

OR

top

OR

top -u username

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• Write a command to list files waiting to be printed.

lpq

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• Write a command to delete 3 files called file1.txt, file2.txt, and data1.txt.

rm file1.txt file2.txt data1.txt

OR

rm file{1,2}.txt data1.txt

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• Write a command to creates a new sub-directory called 'foo' in /tmp.

mkdir /tmp/foo

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• Write a command to delete the directory called 'foo'.

rmdir foo

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• Write a command to read all ls command options.

man ls

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