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. Kills all processes by name
ls -a
date
killall
/bin

2. 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.
/root
/boot
/var
/usr

3. Shows command history
fg
history
dig-x
pico {filename}

4. Creates a group for users
date
groupadd
kill
25

5. Query internet name servers interactively
ls
464
nslookup
service

6. Creates a directory
man
grep '{pattern}' {file}
tail
mkdir

7. View a text file - Use text editor and don't save.
pico {filename}
rmdir
cat {filename} | more
ifconfig

8. Users' home directories - containing saved files - personal settings - etc
kill
/home
rm
pwd

9. Report file system disk space usage
cat {filename}
pico {filename}
161
df

10. Displays the status of a service or all services
cat {filename}
service
179
/usr

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

12. Essential system binaries : init - ip - mount
dig
ls
pico {filename}
/sbin

13. Displays current date and time
20
ifup
date
tail

14. Telnet
23
less {filename}
/dev
sudo

15. Displays the 10 bottom lines of a file
tail
rm
usermod
ls

16. Libraries essential for the binaries in /bin/ and /sbin/
/lib
netstat -r
cat {filename}
/tmp

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

18. Displays Kernel information
pwd
/var/log
uname -a
finger

19. Test network connectivity
ping
fg
killall
grep

20. View a text file - Like more - with extra features
host
/usr
less {filename}
cat

21. BGP
ethtool
179
w
fg

22. Changes directories
cd
head
/bin
nslookup

23. Displays calendar
stat
/usr
cal
115

24. DNS
kill
tail
/var
53

25. Changes group ownership of file or directory
43
chgrp
curl
21

26. dns lookup
netstat -i
/var/log
dig
head

27. SQL
ls -a
chgrp
156
cat > {filename}

28. Prints current working directory
pwd
usermod
ls -a
/sbin

29. Displays the connection media state and capabilities
sudo
464
161
ethtool

30. Displays a table of all network interfaces / errors
/opt
touch
netstat -i
netstat -r

31. Elevate rights to that of root
sudo
du
/mnt
/var

32. HTTP
ifconfig -a
tail
uname -a
80

33. WHOIS
23
156
43
cp

34. Temporarily mounted filesystems
passwd
w
/mnt
ethtool

35. Create a text file: Enter your text (multiple lines with enter are ok) and press control-d to save.
/proc
cat > {filename}
curl
ethtool

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

37. Essential command binaries that need to be available in single user mode; for all users - e.g. - cat - ls - cp.
/bin
443
cat
cat > {filename}

38. Lists all stopped/paused background. Resumes a stopped job
passwd
bg
less {filename}
netstat -i

39. User root's home directory
/lib
156
bg
/root

40. Displays manual or help document for a command/application
man
ifconfig
head
curl

41. Shows who is currently logged in and where
/tmp
cat
w
cat > {filename}

42. Prints file type
161
/var
file
bg

43. Reports a snapshot of the current processes
/proc
uptime
ps
53

44. Parses for string
host
/usr
uname -a
grep

45. Ftp Control
/mnt
tail
ping
21

46. Changes password for a user
nslookup
w
passwd
115

47. Search for all Unix commands that match keyword - e.g apropos file.
chgrp
fg
apropos
sudo

48. Ftp Data
20
netstat -i
22
passwd

49. Displays all file space usage
ls -a
ifup
du -a
df

50. Displays user information
finger
du
21
/mnt