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. IMAP
118
143
mail
464

2. Brings the most recent job to the foreground
fg
ls
du -a
head

3. WHOIS
118
nslookup
pwd
43

4. Check IP Addresses of active interfaces
uname -a
chgrp
ifconfig
netstat -i

5. Kerberos password
464
du
touch
grep

6. Essential command binaries that need to be available in single user mode; for all users - e.g. - cat - ls - cp.
/var/log
/bin
head
kill

7. Contains Boot loader files - e.g. - kernels - initrd; often a separate partition
df
file
/mnt
/boot

8. Test network connectivity
ifconfig
ping
/dev
stat

9. Displays all file space usage
/lib
118
du -a
rmdir

10. Displays kernel routing tables
/boot
netstat -r
netstat -i
dig

11. Essential system binaries : init - ip - mount
/sbin
date
apropos
21

12. Changes group ownership of file or directory
du -a
/opt
more {filename}
chgrp

13. Contains essential devices
443
/proc
/dev
chgrp

14. Parses for string
df
grep '{pattern}' {file}
grep
apropos

15. Removes a directory
ls -a
ps
/var
rmdir

16. Shows who is currently logged in and where
cat
w
464
/bin

17. POP3
110
/var
ifdown
dig-x

18. Create a text file: Enter your text (multiple lines with enter are ok) and press control-d to save.
cat > {filename}
/var/log
20
161

19. Creates a group for users
apropos
groupadd
usermod
file

20. Displays the 10 bottom lines of a file
tail
23
ps
chgrp

21. SQL
bg
/boot
156
ls -a

22. Displays calendar
df
host
cal
stat

23. View a text file - Very handy with ncftp.
passwd
/mnt
page {filename}
chgrp

24. ____ is found at: cd /var/mail then vi into each mail (administrator - www-data - nagios etc.)
stat
/var
mail
/media

25. BGP
179
grep
nslookup
156

26. 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.
cd
/var
80
/bin

27. View a text file - View file but it scrolls.
cat {filename}
pwd
156
head

28. Lists all files within a directory (including hidden)
ls -a
cat
tail
fg

29. Reverse dns lookup
passwd
dig-x
grep
cat

30. Temporary files cleaned on reboot
/var/log
man
/tmp
ls

31. View a text file - Like more - with extra features
110
/etc
43
less {filename}

32. Prints current working directory
mkdir
kill
pwd
/tmp

33. Prints file type
file
rmdir
host
443

34. dns lookup
mail
netstat -r
443
dig

35. Find regular expression in file.

36. Displays manual or help document for a command/application
man
115
less {filename}
nslookup

37. List files within a directory
ls
110
ifconfig -a
dig

38. SFTP
/mnt
ethtool
115
rm

39. Displays current date and time
date
/proc
mv
ifdown

40. Mount points for removable media such as CD-ROMs
/dev
man
/media
uptime

41. Displays the status of a service or all services
/var/log
22
service
chgrp

42. Temporarily mounted filesystems
443
/var
date
/mnt

43. Shows command history
ls -a
file
115
history

44. Creates a file / updates it
touch
cat {filename}
161
cd

45. Displays system uptime
pico {filename}
netstat -i
464
uptime

46. View a text file - View file one screen at a time
man
service
cat {filename} | more
file

47. Libraries essential for the binaries in /bin/ and /sbin/
161
/lib
/home
mkdir

48. Telnet
/tmp
'/'
apropos
23

49. Displays user information
464
finger
/boot
cat > {filename}

50. Host-specific system-wide configuration files
22
finger
/proc
/etc