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. Contains essential devices
touch
history
netstat
/dev

2. Displays the status of a service or all services
service
usermod
/sbin
apropos

3. Check IP Addresses of active interfaces
22
110
ifconfig
23

4. Telnet
usermod
/var/log
curl
23

5. Display all interfaces
fg
ifconfig -a
80
/var

6. View a text file - Use text editor and don't save.
uname -a
bg
/home
pico {filename}

7. Essential command binaries that need to be available in single user mode; for all users - e.g. - cat - ls - cp.
/bin
464
ps
/boot

8. ____ is found at: cd /var/mail then vi into each mail (administrator - www-data - nagios etc.)
ifconfig
head
53
mail

9. Kerberos password
ls
du
464
/boot

10. Creates a directory
cd
ifdown
mkdir
less {filename}

11. Does a DNS lookup or reverse dns lookup
chgrp
156
host
groupadd

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

13. Displays user information
finger
head
/home
cat

14. Users' home directories - containing saved files - personal settings - etc
ls
file
/home
pwd

15. Prints network connections - routing tables - interface stats - masq connections and multicast relationships
uptime
/home
netstat
rmdir

16. Brings an interface up
wget
21
22
ifup

17. Creates a file / updates it
161
/mnt
touch
80

18. Changes group ownership of file or directory
ethtool
143
53
chgrp

19. Report file system disk space usage
bg
/home
df
/usr

20. Libraries essential for the binaries in /bin/ and /sbin/
netstat
grep
cat {filename} | more
/lib

21. Prints current working directory
pwd
groupadd
ps
/dev

22. Creates a group for users
/var/log
groupadd
21
kill

23. Estimate file space usage
du
kill
/boot
netstat

24. Displays the 10 bottom lines of a file
/var/log
tail
page {filename}
du -a

25. Parses for string
ifdown
'/'
cd
grep

26. Prints file type
file
sudo
443
head

27. Ftp Control
21
/bin
/usr
page {filename}

28. Search for all Unix commands that match keyword - e.g apropos file.
/usr
115
143
apropos

29. Prints file information
ifconfig
man
rm
stat

30. BGP
chgrp
179
22
du

31. SNMP
du
161
ethtool
stat

32. View a text file - View file one screen at a time
more {filename}
mail
21
w

33. View a text file - Like more - with extra features
less {filename}
ls
25
top

34. Removes a directory
143
20
cat {filename}
rmdir

35. Moves a file with the option of renaming it
mv
uptime
netstat -r
apropos

36. Test network connectivity
mv
ping
sudo
80

37. Displays calendar
du -a
21
sudo
cal

38. Log files
wget
/var/log
/mnt
20

39. SQL
/media
156
top
118

40. Find regular expression in file.

41. Downloads a file from the internet
touch
pwd
wget
21

42. Changes directories
cd
/proc
netstat
du -a

43. Kills all processes by name
killall
cd
118
43

44. User root's home directory
top
cat {filename} | more
/root
179

45. Create a text file: Enter your text (multiple lines with enter are ok) and press control-d to save.
20
cd
110
cat > {filename}

46. Host-specific system-wide configuration files
netstat -i
finger
/media
/etc

47. Query internet name servers interactively
killall
nslookup
netstat -r
156

48. Displays all file space usage
/opt
ifdown
finger
du -a

49. Virtual filesystem documenting kernel and process status as text files - e.g. uptime or network. In Linux it corresponds to a Procfs mount
464
/etc
110
/proc

50. Configuration for optional installed software
uname -a
/opt
cal
/var