Test your basic knowledge |

Linux Administration

Subject : it-skills

Instructions:

Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can study here.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.

1. Copies a file
156
tail
finger
cp

2. Telnet
23
/media
nslookup
25

3. IMAP
mkdir
143
cp
cal

4. Changes ownership of a file or directory
stat
chown
443
uname -a

5. Kills all processes by name
killall
curl
/boot
ls -a

6. Users' home directories - containing saved files - personal settings - etc
pico {filename}
/root
curl
/home

7. Displays calendar
chown
ifconfig -a
cal
ls

8. Create a text file: Enter your text (multiple lines with enter are ok) and press control-d to save.
netstat -i
cal
cat > {filename}
wget

9. Log files
/var/log
man
ls -a
date

10. Prints contains of text file
cat
dig-x
netstat -i
/dev

11. Lists all files within a directory (including hidden)
netstat
ls -a
/var
25

12. Does a DNS lookup or reverse dns lookup
host
usermod
dig-x
chown

13. Displays kernel routing tables
/usr
netstat -r
head
cal

14. Displays a table of all network interfaces / errors
/boot
apropos
netstat -i
/opt

15. Displays Kernel information
more {filename}
80
uname -a
143

16. Brings and interface down
cd
sudo
23
ifdown

17. Display all interfaces
ifup
ifconfig -a
df
22

18. Displays the 10 top lines of a file
20
head
118
passwd

19. SQL
118
wget
443
touch

20. Essential system binaries : init - ip - mount
wget
23
/dev
/sbin

21. HTTP
page {filename}
110
groupadd
80

22. SQL
156
date
page {filename}
top

23. Checks web connectivity (displays page contents)
usermod
curl
page {filename}
apropos

24. Query internet name servers interactively
22
nslookup
'/'
rm

25. Contains essential devices
mkdir
fg
/dev
mail

26. Test network connectivity
ping
/lib
/tmp
'/'

27. Search for all Unix commands that match keyword - e.g apropos file.
cp
/opt
118
apropos

28. Moves a file with the option of renaming it
ifconfig -a
apropos
bg
mv

29. Displays all file space usage
date
/media
156
du -a

30. Variable files—files whose content is expected to continually change during normal operation of the system—such as logs & spool files & and temporary e-mail files.
/var
bg
/sbin
/root

31. Temporarily mounted filesystems
/etc
/mnt
curl
ping

32. ____ is found at: cd /var/mail then vi into each mail (administrator - www-data - nagios etc.)
fg
passwd
mail
date

33. Creates a file / updates it
25
touch
groupadd
/root

34. Parses for string
80
grep
cp
ifup

35. View a text file - Use text editor and don't save.
'/'
bg
pico {filename}
du

36. Displays current date and time
cat {filename}
cal
date
22

37. View a text file - View file one screen at a time
date
more {filename}
du -a
23

38. SSH
head
pico {filename}
uname -a
22

39. List files within a directory
/opt
ls
stat
netstat

40. Displays manual or help document for a command/application
fg
service
man
groupadd

41. Prints file information
/var/log
stat
cp
ethtool

42. Shows command history
history
43
ifconfig -a
service

43. HTTPS
443
80
25
/lib

44. User root's home directory
/root
/dev
/usr
ifup

45. Reverse dns lookup
dig-x
20
/media
ps

46. POP3
mkdir
110
/tmp
cat {filename} | more

47. Removes a directory
chgrp
464
fg
rmdir

48. Brings the most recent job to the foreground
less {filename}
killall
cat {filename}
fg

49. Changes password for a user
/boot
/root
/media
passwd

50. Kills a process by pid
20
host
156
kill