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 system uptime
156
/mnt
uptime
killall

2. Creates a directory
rmdir
cal
mkdir
21

3. Brings the most recent job to the foreground
/usr
fg
110
chgrp

4. Query internet name servers interactively
more {filename}
nslookup
top
grep '{pattern}' {file}

5. Changes group ownership of file or directory
chown
dig-x
chgrp
143

6. Secondary hierarchy for read-only user data
fg
/usr
22
cat > {filename}

7. User root's home directory
/var/log
/root
page {filename}
/bin

8. Creates a group for users
cal
history
host
groupadd

9. Downloads a file from the internet
/proc
passwd
wget
/mnt

10. Reports a snapshot of the current processes
ps
ethtool
22
ifup

11. Prints current working directory
grep '{pattern}' {file}
118
pwd
443

12. Copies a file
grep '{pattern}' {file}
/bin
43
cp

13. Contains Boot loader files - e.g. - kernels - initrd; often a separate partition
df
mail
/boot
date

14. POP3
161
ethtool
118
110

15. Checks web connectivity (displays page contents)
118
dig-x
curl
ifup

16. Prints file information
156
ifup
stat
grep

17. Temporary files cleaned on reboot
/tmp
bg
date
passwd

18. Report file system disk space usage
df
cp
date
apropos

19. Search for all Unix commands that match keyword - e.g apropos file.
groupadd
w
apropos
grep '{pattern}' {file}

20. Contains essential devices
tail
head
grep '{pattern}' {file}
/dev

21. Displays the connection media state and capabilities
'/'
/tmp
ethtool
history

22. Changes password for a user
/opt
kill
less {filename}
passwd

23. HTTP
rmdir
80
22
cat

24. View a text file - Like more - with extra features
cd
143
mv
less {filename}

25. Essential system binaries : init - ip - mount
/home
/sbin
grep '{pattern}' {file}
22

26. Ftp Data
usermod
/root
20
ifconfig

27. Displays the status of a service or all services
uname -a
161
service
chown

28. View a text file - View file one screen at a time
179
20
less {filename}
cat {filename} | more

29. dns lookup
dig
sudo
cal
ethtool

30. Virtual filesystem documenting kernel and process status as text files - e.g. uptime or network. In Linux it corresponds to a Procfs mount
mkdir
/dev
stat
/proc

31. Creates a file / updates it
stat
53
118
touch

32. Prints network connections - routing tables - interface stats - masq connections and multicast relationships
file
netstat
ls
mv

33. Parses for string
pwd
cat > {filename}
464
grep

34. IMAP
pwd
143
/tmp
netstat -r

35. Kerberos password
fg
'/'
464
netstat -r

36. Lists all stopped/paused background. Resumes a stopped job
464
usermod
bg
chown

37. WHOIS
43
dig-x
/home
df

38. Log files
uptime
less {filename}
/opt
/var/log

39. SMTP
grep
25
/proc
du

40. Essential command binaries that need to be available in single user mode; for all users - e.g. - cat - ls - cp.
dig-x
rm
ls -a
/bin

41. Check IP Addresses of active interfaces
chown
ifconfig
service
head

42. Mount points for removable media such as CD-ROMs
179
/media
head
host

43. Users' home directories - containing saved files - personal settings - etc
/home
dig-x
/proc
ifup

44. Displays current date and time
file
date
ifup
touch

45. Changes directories
21
cd
443
top

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

47. Shows command history
netstat -r
25
history
grep

48. Adds existing user to a group
usermod
80
cat > {filename}
43

49. Reverse dns lookup
dig-x
chgrp
ls -a
apropos

50. Ftp Control
file
pwd
rmdir
21