Test your basic knowledge |

Linux Administration

Subject : it-skills

Instructions:

Answer 50 questions in 20 minutes. 2 minutes extra for reading the instructions.
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. Removes a directory
rmdir
date
/tmp
man

2. Displays the status of a service or all services
kill
service
file
ls -a

3. Essential system binaries : init - ip - mount
/sbin
80
passwd
/bin

4. Downloads a file from the internet
usermod
chown
w
wget

5. DNS
du -a
53
head
kill

6. Moves a file with the option of renaming it
mv
sudo
fg
groupadd

7. Search for all Unix commands that match keyword - e.g apropos file.
mkdir
apropos
cat > {filename}
passwd

8. Displays all file space usage
du -a
/boot
mv
20

9. Prints contains of text file
cat
w
date
cat {filename} | more

10. WHOIS
date
143
wget
43

11. Displays kernel routing tables
464
nslookup
netstat -r
stat

12. Create a text file: Enter your text (multiple lines with enter are ok) and press control-d to save.
/sbin
464
cat > {filename}
20

13. Changes password for a user
passwd
23
25
chgrp

14. IMAP
143
chown
cat {filename} | more
25

15. Display all interfaces
ifconfig -a
netstat -i
pico {filename}
ls -a

16. SNMP
w
chgrp
161
sudo

17. View a text file - Use text editor and don't save.
bg
host
pico {filename}
grep '{pattern}' {file}

18. Virtual filesystem documenting kernel and process status as text files - e.g. uptime or network. In Linux it corresponds to a Procfs mount
/proc
chgrp
ifconfig -a
pico {filename}

19. Shows command history
ls
ps
mv
history

20. Changes directories
cd
/tmp
apropos
page {filename}

21. Creates a file / updates it
443
touch
killall
cat

22. Displays the 10 top lines of a file
head
du -a
man
grep

23. Displays a table of all network interfaces / errors
less {filename}
passwd
ethtool
netstat -i

24. View a text file - Very handy with ncftp.
20
page {filename}
rm
cat {filename}

25. Reports a snapshot of the current processes
115
w
ps
cd

26. Shows who is currently logged in and where
w
rm
less {filename}
netstat

27. Root directory of file system (not the user root's home dir)
'/'

28. Essential command binaries that need to be available in single user mode; for all users - e.g. - cat - ls - cp.
/dev
cat
/media
/bin

29. Copies a file
'/'
cd
cp
usermod

30. POP3
110
mkdir
tail
head

31. Displays Kernel information
/home
80
uname -a
finger

32. HTTPS
cat {filename}
wget
443
cat

33. View a text file - View file one screen at a time
cat {filename} | more
/bin
115
killall

34. Log files
20
/bin
apropos
/var/log

35. Displays system uptime
fg
uptime
tail
head

36. Prints network connections - routing tables - interface stats - masq connections and multicast relationships
/boot
25
netstat
cal

37. Brings the most recent job to the foreground
/lib
netstat
fg
25

38. Parses for string
/lib
grep
tail
touch

39. Estimate file space usage
/home
23
/usr
du

40. Reverse dns lookup
/etc
file
443
dig-x

41. Configuration for optional installed software
cat {filename} | more
apropos
rm
/opt

42. Displays the 10 bottom lines of a file
22
/dev
/proc
tail

43. Deletes a file
/dev
finger
pico {filename}
rm

44. Test network connectivity
ping
uname -a
464
'/'

45. Brings an interface up
/usr
43
ethtool
ifup

46. View a text file - View file but it scrolls.
df
nslookup
cat {filename}
115

47. Creates a directory
143
mkdir
finger
/lib

48. SMTP
25
usermod
ifdown
/var

49. Lists all files within a directory (including hidden)
top
ls -a
/root
grep '{pattern}' {file}

50. Adds existing user to a group
groupadd
/var
/home
usermod