Basic File Management (4)

Question 2

Which of the following commands can create a file named test.txt?

1. mkdir test.txt
2. touch test.txt
3. echo Hello test.txt
4. echo Hello > test.txt
5. rm -i test.txt
6. tr 1 2 < test.txt

Answer 2

2. touch test.txt
   AND
3. echo Hello > test.txt

The touch command allows you to create a blank empty file, if it doesn’t previously exist (If the file does already exist, the touch command just updates the file’s timestamps). The echo Hello > test.txt command will also create a file, using STDOUT redirection.

Question 3

Which of the following commands can delete a file named test.txt?
mkdir test.txt

1. rm test.txt
2. del test.txt
3. touch -d test.txt
4. rm -i test.txt
5. tr 1 2 < test.txt

Answer 3

1. rm test.txt
   AND
2. rm -i test.txt

The rm and rm -i commands can both delete a file named test.txt on a Linux system.

Question 4

Which of the following commands deletes an empty directory named test?

1. rm -R test
2. rm test
3. del test
4. touch -d test
5. rm -r test
6. rmdir test

Answer 4

1. rm -R test, 5. rm -r test AND 6. rmdir test

The rmdir command is the most commonly used command to remove (delete) and empty directory. However, the rm -r and rm -R commands will work too.

Question 5

Which of the following commands deletes the non-empty directory named test?

1. rm -R test
2. rm test
3. del test
4. touch -d test
5. rm -r test
6. rmdir test

Answer 5

1. rm -R test
   AND
2. rm -r test

The rm -r and rm -R commands are the ones to use to remove (delete) a directory that has files in it.

Question 6

You need to create a tarball. Which tar command and options should you use?

1. tar -tf
2. tar -vf
3. tar -cvf
4. tar -xzf
5. tar -czf
6. tar -xvf

Answer 6

5. tar -czf

The tar -czf command and options will create a tarball using gzip compression (but you will need to also provide the name of the tarball file, and the files to put into the tarball).

Question 7

Which of the following commands creates a cpio archive?

1. cpio -ov > filearch.cpio file?
2. cpio -cv > filearch.cpio file?
3. ls file? | cpio -ov > filearch.cpio
4. ls file? | cpio -cv > filearch.cpio
5. cat file? | cpio -cv filearch.cpio
6. cat file? | cpio -cv > filearch.cpio

Answer 7

5. cat file? | cpio -cv filearch.cpio

The ls file? | cpio -ov > filearch.cpio command uses the proper STDIN redirection and options for creating a cpio archive.

Question 8

When you extract files from a cpio archive file or just view them, you are using what mode?

1. Archive
2. Extract
3. Compress
4. View
5. Copy-Out
6. Copy-In

Answer 8

6. Copy-In

When you extract files from a cpio archive file or just view them, you are using Copy-In mode. (When you create a cpio archive, you are using Copy-Out mode.)