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 current date and time
date
'/'
uptime
20

2. HTTP
ifdown
ifconfig -a
80
du

3. Deletes a file
kill
43
cp
rm

4. Lists all stopped/paused background. Resumes a stopped job
21
netstat -i
bg
ifup

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

6. Report file system disk space usage
stat
cd
df
mkdir

7. Essential system binaries : init - ip - mount
/etc
/sbin
cat > {filename}
/var

8. Displays manual or help document for a command/application
ifup
usermod
/etc
man

9. Displays a table of all network interfaces / errors
netstat -i
156
less {filename}
rm

10. SSH
22
20
service
118

11. Reports a snapshot of the current processes
du -a
ps
du
ifdown

12. Creates a group for users
touch
apropos
groupadd
stat

13. Users' home directories - containing saved files - personal settings - etc
/home
/etc
115
apropos

14. Displays the connection media state and capabilities
df
grep
ethtool
443

15. Estimate file space usage
file
pwd
du
stat

16. Does a DNS lookup or reverse dns lookup
443
host
464
/sbin

17. Contains Boot loader files - e.g. - kernels - initrd; often a separate partition
/boot
143
netstat
110

18. View a text file - View file but it scrolls.
'/'
kill
cat {filename}
22

19. View a text file - Very handy with ncftp.
usermod
page {filename}
rm
file

20. Changes password for a user
nslookup
/dev
mkdir
passwd

21. Telnet
host
23
nslookup
less {filename}

22. Shows command history
ifconfig -a
ifup
history
cat

23. Creates a file / updates it
bg
143
touch
file

24. Prints file information
kill
less {filename}
stat
cd

25. Temporary files cleaned on reboot
mkdir
uname -a
/tmp
touch

26. Displays the 10 bottom lines of a file
tail
nslookup
cat {filename} | more
dig-x

27. SQL
/boot
118
uptime
156

28. BGP
cat
179
nslookup
443

29. Prints current working directory
apropos
53
pwd
/home

30. Query internet name servers interactively
rmdir
nslookup
53
'/'

31. Displays all current running processes (similar to task manager)
top
ps
page {filename}
uname -a

32. Lists all files within a directory (including hidden)
/lib
ls -a
rm
ethtool

33. View a text file - Use text editor and don't save.
w
23
chown
pico {filename}

34. Search for all Unix commands that match keyword - e.g apropos file.
man
apropos
/opt
chown

35. Essential command binaries that need to be available in single user mode; for all users - e.g. - cat - ls - cp.
ifdown
/bin
110
killall

36. Brings and interface down
mv
ifdown
grep
/opt

37. Kills a process by pid
ifconfig -a
date
kill
groupadd

38. Libraries essential for the binaries in /bin/ and /sbin/
history
touch
/lib
groupadd

39. SQL
156
/bin
killall
stat

40. Find regular expression in file.

41. Parses for string
110
apropos
grep
/etc

42. User root's home directory
/root
pico {filename}
touch
/var

43. Brings the most recent job to the foreground
uptime
stat
fg
top

44. Changes group ownership of file or directory
more {filename}
ls -a
tail
chgrp

45. SFTP
netstat
cat {filename} | more
history
115

46. Downloads a file from the internet
/sbin
/usr
53
wget

47. ____ is found at: cd /var/mail then vi into each mail (administrator - www-data - nagios etc.)
mail
chgrp
/mnt
ifdown

48. Moves a file with the option of renaming it
118
apropos
/opt
mv

49. SNMP
161
mkdir
cat {filename} | more
20

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