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Advanced Unix Commands 1. When you...

Advanced Unix Commands

1. When you use the paste command, by default, the pasted results appear in columns separated by commas.

(Points : 1)

True

False

2. The root of a file system is denoted by the ____. (Points : 1)

dot (.)

dot dot (..)

forward slash (/)

backward slash (\)

3. The term ____ refers to a “black hole”; any data sent to this device is gone forever. (Points : 1)

void

root

null

console

4. The cp ____ option creates a symbolic link or name at the destination rather than a physical file. (Points : 1)

-s

-y

-l

-n

5. The command rmdir can be used to delete a directory that is not empty. (Points : 1)

True

False

6. A(n) ____ is used to reduce file fragmentation, because a block of contiguous disk storage can be reserved for a file. (Points : 1) partition

node

journal

extent

7. The ____ option of the paste command is used to specify a different separator as a delimiter. (Points : 1)

-t

-o

-d

-s

8. UNIX/Linux store data, such as letters, product records, or vendor reports, in flat ASCII files. (Points : 1)

True

False

9. The paste command normally sends its output to ____. (Points : 1) s

tdout

null

stderr

the file indicated as an argument

10. To redirect the list of the files in a directory to a file called homedir.list, you enter ____. (Points : 1)

ls < homedir.list 
ls > homedir.list 
homedir.list < ls

homedir.list > ls

11. The ____ is shorthand for the home directory, which typically has the same name as the user’s account name. (Points : 1) backward slash (\)

forward slash (/)

dollar sign ($)

tilde (~)

12. The rm -r command can be used to delete a directory that is not empty. (Points : 1)

True

False

13. The command > accountsfile ____. (Points : 1)

deletes de file accounts

file is not valid in UNIX/Linux systems

displays the contents of the file accountsfile on the screen

creates an empty file called accountsfile

14. A(n) ____ path begins at the root level and lists all subdirectories to the destination file. (Points : 1)

root

primary

absolute

relative

15. If you plan to have multiple users access a system, you can create a ____ partition, which is the home directory for all users’ directories. (Points : 1)

/root

/etc

/usr

/home

16. UNIX/Linux systems interpret a single dot character to mean the current working directory. (Points : 1)

True

False

17. You use the ____ command to display a directory’s contents, including files and other directories. (Points : 1)

dir

d

pwd

ls

18. A sorting ____ is a field position within each line. (Points : 1) index

key

column

position

19. The ____ partition acts like an extension of memory, so that UNIX/Linux have more room to run large programs. (Points : 1) backup

primary

virtual

swap

20. The ____ directory contains configuration files that the system uses when the computer starts. (Points : 1)

/boot

/bin

/dev

/etc

21. You can change the pattern of permission settings by using the ____ command. (Points : 1)

chperm

chmod

chsec

chown

22. If you plan to have multiple users accessing your system, you should consider having a /var partition in which to store some or all of the nonkernel operating system programs that are accessed by users. (Points : 1)

True

False

23. You can use the ____ command to create empty files. (Points : 1)

touch

create

make

null

24. Moving and renaming a file are essentially the same operation. (Points : 1)

True

False

25. The UNIX file system (ufs) supports ____, which automatically move data on damaged portions of disks to areas that are not damaged. (Points : 1)

hot fixes

backups

recovery fixes

extents

26. The command cd source uses relative path addressing. (Points : 1)

True

False

27. To move a file, you use the ____ command along with the source file name and destination name. (Points : 1)

rm

rename

mv

move

28. A disadvantage of ufs is that it does not support journaling. (Points : 1)

True

False

29.When you no longer need a file, you can delete it using the ____ command. (Points : 1)

rm

remove

dl

delete

30. System administrators and programmers refer to standard input as ____. (Points : 1)

sin

stin

stdin

standardin

31. The ____ directory contains executables, which are the programs needed to start the system and perform other essential system tasks. (Points : 1)

/boot

/bin

/dev

/etc

32. The ____ command is used to look for patterns in files. (Points : 1)

awk

find

pattern

search

33. You can use the ____ operator to redirect commands or program error messages from the screen to a file. (Points : 1)

1>

2>

3>

4>

34. The two most popular hard disk interfaces are IDE and ____. (Points : 1)

ATA

SCSI

EIDE

RAID

35. The join command is used to associate information in two different files on the basis of a common field or ____ in those files

index 
link 
column 
key

36. ____ are programs that perform operations such as copying files, listing directories, and communicating with other users. (Points : 1)
Extents
Utilities
Applications
Services

37. To navigate the UNIX/Linux directory structure, you use the ____ command. (Points : 1)
nav
cd
mv
jump

38. When you use find, it is useful to note that some UNIX versions require the ____ option after the file name to display the names of files. (Points : 1)
-display
-print
-show
-names

39.You can complete a project using awk that you cannot complete using a combination of paste, cut, sort, and join.
(Points : 1)
True
False

40.When you are moving files, using the -o option with the mv command can be a good idea so that you don't unexpectedly overwrite a destination file with the same name.
(Points : 1)
True
False

 

Submitted: 6 years ago.Category: Programming
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1/18/2012
Programmer: LogicPro, Computer Software Engineer replied 6 years ago
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