4. I want to uncompress and unarchive the file: hello.tar.bz2 What command would

Q: 4. I want to uncompress and unarchive the file: hello.tar.bz2 What command would

1. clear 2. scp command 3. history -c && history -w 4.tar xjf hello.tar.bz2 5.Tar xjf hello.tar.gz 6.494$ 7.mv ~/bigfile ~/Documents/oldfile 8.Displays who I am (my user ID) 9.Is used to chain commands together 10. sudo find /etc -type d -exec empty {} ;

ID: 3551952 • Letter: 4

Question

4. I want to uncompress and unarchive the file:

hello.tar.bz2

What command would do this?

bunzip hello.tar.bz2

gunzip hello.tar.bz2

tar xzf hello.tar.bz2

tar xjf hello.tar.bz2

5. I have a file named 'hello.tar.gz.' I want to uncompress and unarchive the file. Which command would do this?

tar xfz hello.tar.gz

tar fz hello.tar.gz

tar xfj hello.tar.gz

Tar xjf hello.tar.gz

6. I run 'history' and see the following:

....
492 ls -al
493 clear
494 sudo cat /etc/passwd
495 ls -al
496 clear

I want to rerun the command 'sudo cat /etc/passwd'.

Which command would do this?

494$

!494

!sudo cat /etc/passwd

7. I have a file named 'bigfile' in ~. I want to rename the file to 'oldfile', and I want to move it to ~/Documents. The command that would do this is:

rename bigfile oldfile | ~/Documents

mv ~/bigfile ~/Documents/oldfile

mv bigfile oldfile < ~/Documents

cat bigfile | ~/Documents

Displays only power users

Is used to concatenate files

Is always used with find or grep.

10. Which of the following commands would find empty files (not directories) under /etc?

sudo find /etc -type f

sudo find /etc -type d -exec empty {} ;

sudo find /etc -type f -empty

sudo grep /etc -empty

11. I want to find files under / that have the characters 'FSU' in them, case insensitive. Which command would do this?

sudo grep -iname 'FsU'

sudo find / -type f -iname '*fsu*'

sudo grep -r / 'FSU'

sudo find ~ -type f -name 'FSU*'

12. I'm in ~. I want to create a tar file named "mydocs.tar" that contains all files in ~ ending in .doc. What command would I run?

tar cf mydocs.tar *.doc

It can't be done!

tar xvf mydocs.tar *.doc

sudo tar cvfz mydocs.tar *.doc

13. I want to compress the file 'moNster.tar'. Which command would I use?

bzip2 moNster.tar

bunzip moNster.tar

tar -xzvf moNster.tar

bzip2 monster.tar

14. I want to find all files under ~ that were modified less than 10 minutes ago. The command I run would be:

find ~ -amin -10

15. I want to search for files under ~ that contain the keyword "Flumox," and to redirect that output to a new file called "Flumox.txt". The command would be:

grep -R "Flumox" ~ > ~/Flumox.txt

grep -i "Flumox" > Flumox.txt

find -R "Grep" ~ < Flumox.txt

find -name 'Flumox' > Flumox

16. I'm in the following directory:

17. I'm in my home directory and want to create the following directory hierarchy with one command:

~/calculus/homework/june/2012

Which command would do this?

mkdir -r calculus/homework/june/2012

mdir -p calculus/homework/june/2012

mkdir -p /calculus/homework/june/2012

mkdir -p calculus/homework/june/2012

18. I'm in the directory:

/var/log/mail/map/june/2012/calculus/hard/problems/yikes/do/not/want/to/fail/this/class/again

I 'cd' back to my home directory using 'cd ~'.

Now I want to flip BACK to the preceding directory (/var/log/mail, etc.).

What's the fastest way to do that?

cd -

cd / var/log/mail/map/june/2012/calculus/hard/problems/yikes/do/not/want/to/fail/this/class/again

cd ~

cd ../../../../../../../../../../../../../../../

19. I want to install the program "ruprecht" under Mint. Easiest way to do that is:

aptitude install ruprecht

sudo aptitude install ruprecht

sudo atitude install ruprecht

Can't be done in Linux.

20. I want a long listing of all files, including hidden files, in all directories residing under ~/POWER, and I want to save it to a file called 'myfiles'. What command would do this?

sudo ls ~/POWER < myfiles

ls -alR ~/POWER > myfiles

ls -alR ~ > myfiles

ls > files > ~/POWER

21. I want to update my system with the most recent packages. I do that with:

atitutde update

atitude safe-upgarde

aptitude update && atitude safe-upgrade

su, su, sudio safe-upgrade

sudo aptitude update && sudo aptitude safe-upgrade

22. I can't remember the command to delete a directory. A good way to find commands that have either the word 'delete' in it, or in the description, would be to run:

delete --help

apropos delete

find / -name delete

man delete

23. I want to know what devices are mounted on my system. The best way to find out is to run:

mount

umount

sufo fdisk -l

dmesg | grep -exec sort {} ;

24. I want to find all regular files in my /var/log/mail directory with a '*.txt' extension that are empty. What command would do this?

find /var/log/mail -name '*.txt'

sudo find /var/log/mail -type f -name '*.txt' -empty

sudo find ~/VAR/LOG/MAIL -empty

find / -type f -name '*.txt' -empty

1)
Clears the terminal screen 2)
Sends packets to a remote system 3)
Clears your history
Clears a user's password

4. I want to uncompress and unarchive the file:

hello.tar.bz2

What command would do this?

Question 4 options:

bunzip hello.tar.bz2

gunzip hello.tar.bz2

tar xzf hello.tar.bz2

tar xjf hello.tar.bz2

5. I have a file named 'hello.tar.gz.' I want to uncompress and unarchive the file. Which command would do this?

Question 5 options: 1)

tar xfz hello.tar.gz

tar fz hello.tar.gz

tar xfj hello.tar.gz

Tar xjf hello.tar.gz

6. I run 'history' and see the following:

....
492 ls -al
493 clear
494 sudo cat /etc/passwd
495 ls -al
496 clear

I want to rerun the command 'sudo cat /etc/passwd'.

Which command would do this?

Question 6 options: 1)

494$

!494

!sudo cat /etc/passwd

7. I have a file named 'bigfile' in ~. I want to rename the file to 'oldfile', and I want to move it to ~/Documents. The command that would do this is:

Question 7 options: 1)

rename bigfile oldfile | ~/Documents

mv ~/bigfile ~/Documents/oldfile

mv bigfile oldfile < ~/Documents

cat bigfile | ~/Documents

8. The 'who' command ... Question 8 options: 1) Doesn't exist 2) Displays everyone who is logged in 3)

Displays only power users

4) Displays who I am (my user ID)
9. | (pipe) is used for what? Question 9 options: 1) Is used to create little walls between things in Linux 2)

Is used to concatenate files

3) Is used to chain commands together 4)

Is always used with find or grep.

10. Which of the following commands would find empty files (not directories) under /etc?

Question 10 options:

sudo find /etc -type f

sudo find /etc -type d -exec empty {} ;

sudo find /etc -type f -empty

sudo grep /etc -empty

11. I want to find files under / that have the characters 'FSU' in them, case insensitive. Which command would do this?

Question 11 options:

sudo grep -iname 'FsU'

sudo find / -type f -iname '*fsu*'

sudo grep -r / 'FSU'

sudo find ~ -type f -name 'FSU*'

12. I'm in ~. I want to create a tar file named "mydocs.tar" that contains all files in ~ ending in .doc. What command would I run?

Question 12 options:

tar cf mydocs.tar *.doc

It can't be done!

tar xvf mydocs.tar *.doc

sudo tar cvfz mydocs.tar *.doc

13. I want to compress the file 'moNster.tar'. Which command would I use?

Question 13 options:

bzip2 moNster.tar

bunzip moNster.tar

tar -xzvf moNster.tar

bzip2 monster.tar

14. I want to find all files under ~ that were modified less than 10 minutes ago. The command I run would be:

find ~ -amin -10

Question 14 options: True False

15. I want to search for files under ~ that contain the keyword "Flumox," and to redirect that output to a new file called "Flumox.txt". The command would be:

Question 15 options:

grep -R "Flumox" ~ > ~/Flumox.txt

grep -i "Flumox" > Flumox.txt

find -R "Grep" ~ < Flumox.txt

find -name 'Flumox' > Flumox

16. I'm in the following directory:

  ~/Docs/2012/usf/linux/spring/night

  If issue this command:

  cd ../../../..

  In what directory would I be now?

Question 16 options:

  ~/Docs/2012/usf/linux/

  ~/Docs/2012/

  ~/Docs/2012/usf/

17. I'm in my home directory and want to create the following directory hierarchy with one command:

~/calculus/homework/june/2012

Which command would do this?

Question 17 options:

mkdir -r calculus/homework/june/2012

mdir -p calculus/homework/june/2012

mkdir -p /calculus/homework/june/2012

mkdir -p calculus/homework/june/2012

18. I'm in the directory:

/var/log/mail/map/june/2012/calculus/hard/problems/yikes/do/not/want/to/fail/this/class/again

I 'cd' back to my home directory using 'cd ~'.

Now I want to flip BACK to the preceding directory (/var/log/mail, etc.).

What's the fastest way to do that?

Question 18 options:

cd -

cd / var/log/mail/map/june/2012/calculus/hard/problems/yikes/do/not/want/to/fail/this/class/again

cd ~

cd ../../../../../../../../../../../../../../../

19. I want to install the program "ruprecht" under Mint. Easiest way to do that is:

Question 19 options:

aptitude install ruprecht

sudo aptitude install ruprecht

sudo atitude install ruprecht

Can't be done in Linux.

20. I want a long listing of all files, including hidden files, in all directories residing under ~/POWER, and I want to save it to a file called 'myfiles'. What command would do this?

Question 20 options:

sudo ls ~/POWER < myfiles

ls -alR ~/POWER > myfiles

ls -alR ~ > myfiles

ls > files > ~/POWER

21. I want to update my system with the most recent packages. I do that with:

Question 21 options:

atitutde update

atitude safe-upgarde

aptitude update && atitude safe-upgrade

su, su, sudio safe-upgrade

sudo aptitude update && sudo aptitude safe-upgrade

22. I can't remember the command to delete a directory. A good way to find commands that have either the word 'delete' in it, or in the description, would be to run:

Question 22 options:

delete --help

apropos delete

find / -name delete

man delete

23. I want to know what devices are mounted on my system. The best way to find out is to run:

Question 23 options:

mount

umount

sufo fdisk -l

dmesg | grep -exec sort {} ;

24. I want to find all regular files in my /var/log/mail directory with a '*.txt' extension that are empty. What command would do this?

Question 24 options:

find /var/log/mail -name '*.txt'

sudo find /var/log/mail -type f -name '*.txt' -empty

sudo find ~/VAR/LOG/MAIL -empty

find / -type f -name '*.txt' -empty

Explanation / Answer

1. clear

2. scp command

3. history -c && history -w

4.tar xjf hello.tar.bz2

5.Tar xjf hello.tar.gz

6.494$

7.mv ~/bigfile ~/Documents/oldfile

8.Displays who I am (my user ID)

9.Is used to chain commands together

10.

sudo find /etc -type d -exec empty {} ;

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4. I want to uncompress and unarchive the file: hello.tar.bz2 What command would

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4. I want to uncompress and unarchive the file: hello.tar.bz2 What command would

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