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. Users' home directories - containing saved files - personal settings - etc
/home
du -a
20
/var/log

2. Essential command binaries that need to be available in single user mode; for all users - e.g. - cat - ls - cp.
21
/opt
22
/bin

3. Libraries essential for the binaries in /bin/ and /sbin/
uptime
118
/lib
/mnt

4. Find regular expression in file.

5. Displays Kernel information
chgrp
host
uname -a
rm

6. Brings and interface down
ifdown
mkdir
w
'/'

7. Displays user information
/etc
156
netstat
finger

8. Report file system disk space usage
finger
df
less {filename}
groupadd

9. Temporary files cleaned on reboot
ifdown
118
/tmp
host

10. Lists all files within a directory (including hidden)
kill
ls -a
21
ifconfig

11. DNS
cat {filename}
53
curl
118

12. Prints current working directory
cat > {filename}
pwd
53
443

13. View a text file - Very handy with ncftp.
touch
/tmp
page {filename}
43

14. Checks web connectivity (displays page contents)
touch
curl
/opt
killall

15. Mount points for removable media such as CD-ROMs
sudo
/var
ping
/media

16. HTTP
du -a
ifdown
80
118

17. SMTP
cat > {filename}
25
ping
stat

18. View a text file - View file but it scrolls.
cat {filename}
22
ls
more {filename}

19. Shows command history
history
less {filename}
cp
mail

20. View a text file - Like more - with extra features
curl
host
80
less {filename}

21. Secondary hierarchy for read-only user data
/usr
110
cat {filename}
/mnt

22. Displays calendar
/root
cal
service
w

23. Moves a file with the option of renaming it
21
/home
/usr
mv

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

25. Changes ownership of a file or directory
stat
chown
history
ifconfig

26. Changes password for a user
ping
passwd
usermod
/media

27. Adds existing user to a group
pico {filename}
usermod
touch
/tmp

28. Displays the connection media state and capabilities
ls
ethtool
/dev
/boot

29. Check IP Addresses of active interfaces
head
20
ifconfig
23

30. Displays all current running processes (similar to task manager)
usermod
ps
top
du

31. Displays the 10 top lines of a file
head
143
netstat
host

32. View a text file - View file one screen at a time
cat {filename} | more
history
/var/log
25

33. dns lookup
top
bg
dig
cat > {filename}

34. Kerberos password
464
touch
sudo
23

35. Ftp Data
pico {filename}
20
rm
21

36. Contains Boot loader files - e.g. - kernels - initrd; often a separate partition
man
chown
du
/boot

37. Displays all file space usage
du -a
ping
161
stat

38. Displays the status of a service or all services
touch
curl
service
grep '{pattern}' {file}

39. Creates a directory
cat
du
mkdir
pico {filename}

40. POP3
fg
/var/log
/usr
110

41. Virtual filesystem documenting kernel and process status as text files - e.g. uptime or network. In Linux it corresponds to a Procfs mount
cat > {filename}
179
/proc
mkdir

42. Downloads a file from the internet
/proc
cat > {filename}
/dev
wget

43. Displays kernel routing tables
netstat -r
ps
ifconfig -a
man

44. Prints file information
curl
stat
/usr
man

45. Kills a process by pid
more {filename}
'/'
443
kill

46. Shows who is currently logged in and where
chown
w
kill
179

47. BGP
443
/proc
143
179

48. Essential system binaries : init - ip - mount
161
/sbin
netstat -r
pico {filename}

49. Query internet name servers interactively
nslookup
kill
ls
stat

50. Displays the 10 bottom lines of a file
tail
killall
ls -a
/media