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. Displays the status of a service or all services
cal
service
killall
143

2. SNMP
/dev
/etc
443
161

3. Displays calendar
w
cal
21
/home

4. Ftp Data
20
du -a
/lib
115

5. Removes a directory
rmdir
rm
sudo
110

6. Telnet
kill
fg
23
uname -a

7. POP3
dig-x
ls
mkdir
110

8. SQL
156
443
'/'
head

9. HTTP
cp
80
25
killall

10. View a text file - Very handy with ncftp.
page {filename}
ping
nslookup
ps

11. Prints file type
du -a
file
more {filename}
/tmp

12. View a text file - View file one screen at a time
netstat -r
more {filename}
page {filename}
dig-x

13. Users' home directories - containing saved files - personal settings - etc
/home
mail
tail
uptime

14. Check IP Addresses of active interfaces
finger
ifconfig
stat
/var

15. SFTP
ps
kill
page {filename}
115

16. Create a text file: Enter your text (multiple lines with enter are ok) and press control-d to save.
53
ifconfig
apropos
cat > {filename}

17. Lists all files within a directory (including hidden)
wget
/lib
ls -a
curl

18. Prints network connections - routing tables - interface stats - masq connections and multicast relationships
80
mkdir
/proc
netstat

19. Shows command history
cat {filename} | more
history
/mnt
man

20. Displays manual or help document for a command/application
history
man
161
/proc

21. Contains essential devices
/dev
file
/var
page {filename}

22. Contains Boot loader files - e.g. - kernels - initrd; often a separate partition
ifconfig
25
ping
/boot

23. Search for all Unix commands that match keyword - e.g apropos file.
/proc
apropos
mkdir
ifup

24. Lists all stopped/paused background. Resumes a stopped job
stat
bg
dig
apropos

25. Brings the most recent job to the foreground
22
man
fg
156

26. Displays the 10 bottom lines of a file
/proc
uptime
tail
top

27. Kills a process by pid
wget
kill
mail
passwd

28. Brings an interface up
ifup
/bin
top
grep '{pattern}' {file}

29. Secondary hierarchy for read-only user data
netstat
cat
115
/usr

30. Reports a snapshot of the current processes
/root
bg
history
ps

31. Does a DNS lookup or reverse dns lookup
/root
du -a
host
service

32. Parses for string
nslookup
grep
156
/bin

33. Changes group ownership of file or directory
443
date
chgrp
killall

34. Prints current working directory
pwd
kill
/mnt
43

35. Prints contains of text file
cat
80
110
cat {filename} | more

36. Host-specific system-wide configuration files
host
/etc
head
/mnt

37. Downloads a file from the internet
wget
fg
ifconfig
file

38. SSH
apropos
man
22
killall

39. Changes directories
date
curl
cd
bg

40. Kerberos password
mv
ping
464
143

41. Estimate file space usage
21
du
tail
/media

42. Deletes a file
rm
pwd
53
w

43. SMTP
uptime
25
ifconfig -a
20

44. SQL
fg
118
ethtool
23

45. Adds existing user to a group
service
21
115
usermod

46. Copies a file
cp
rmdir
file
nslookup

47. Virtual filesystem documenting kernel and process status as text files - e.g. uptime or network. In Linux it corresponds to a Procfs mount
/proc
grep
less {filename}
man

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

49. Shows who is currently logged in and where
w
ethtool
80
chgrp

50. Checks web connectivity (displays page contents)
20
/root
rmdir
curl