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. List files within a directory
ls
netstat -i
du
host

2. ____ is found at: cd /var/mail then vi into each mail (administrator - www-data - nagios etc.)
ifup
date
mail
143

3. Report file system disk space usage
netstat
df
ifconfig
passwd

4. Secondary hierarchy for read-only user data
43
80
/usr
apropos

5. Kerberos password
passwd
head
464
ps

6. Brings and interface down
ifdown
ifup
less {filename}
kill

7. Ftp Control
/var
pwd
80
21

8. Prints file information
/root
/bin
stat
uname -a

9. Displays the connection media state and capabilities
apropos
ethtool
chown
/tmp

10. View a text file - Like more - with extra features
cal
dig-x
less {filename}
mail

11. Telnet
23
161
killall
uptime

12. Estimate file space usage
23
du
/root
cp

13. Lists all stopped/paused background. Resumes a stopped job
killall
netstat
ifconfig
bg

14. 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.
service
cat {filename} | more
kill
/var

15. Displays the 10 bottom lines of a file
/proc
tail
/opt
passwd

16. Query internet name servers interactively
tail
nslookup
/var
/root

17. Prints current working directory
/root
110
pwd
less {filename}

18. POP3
apropos
80
110
179

19. Displays current date and time
curl
du -a
date
df

20. Essential command binaries that need to be available in single user mode; for all users - e.g. - cat - ls - cp.
uname -a
/bin
w
cat {filename} | more

21. Adds existing user to a group
ifup
mkdir
usermod
more {filename}

22. SFTP
netstat
/usr
115
53

23. Creates a group for users
page {filename}
/var/log
groupadd
/bin

24. SQL
grep '{pattern}' {file}
/usr
156
mkdir

25. Displays kernel routing tables
netstat -r
head
chgrp
/var

26. WHOIS
ls -a
43
man
22

27. HTTPS
/mnt
443
20
43

28. Changes ownership of a file or directory
nslookup
chown
groupadd
20

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

30. Users' home directories - containing saved files - personal settings - etc
/home
apropos
killall
finger

31. Displays a table of all network interfaces / errors
netstat
du -a
netstat -i
chgrp

32. Virtual filesystem documenting kernel and process status as text files - e.g. uptime or network. In Linux it corresponds to a Procfs mount
page {filename}
passwd
/proc
df

33. Parses for string
rmdir
uname -a
/sbin
grep

34. View a text file - View file one screen at a time
pico {filename}
more {filename}
/opt
/root

35. Displays the 10 top lines of a file
bg
head
top
23

36. Changes directories
cd
110
grep
ifup

37. Displays calendar
cal
uptime
cat {filename} | more
usermod

38. Elevate rights to that of root
curl
killall
ping
sudo

39. SQL
/bin
page {filename}
ls -a
118

40. View a text file - View file but it scrolls.
cat {filename}
less {filename}
service
'/'

41. BGP
netstat
ping
179
/lib

42. Shows who is currently logged in and where
w
ifconfig -a
less {filename}
fg

43. Reports a snapshot of the current processes
/bin
groupadd
ifdown
ps

44. Deletes a file
/mnt
bg
rm
161

45. Removes a directory
ls
rmdir
date
wget

46. Displays user information
ethtool
finger
/mnt
passwd

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

48. Prints network connections - routing tables - interface stats - masq connections and multicast relationships
443
usermod
ping
netstat

49. Shows command history
ifdown
history
443
apropos

50. Contains Boot loader files - e.g. - kernels - initrd; often a separate partition
'/'
nslookup
/boot
/home