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
/usr
/media
killall
stat

2. Displays the status of a service or all services
top
ls -a
mkdir
service

3. Displays a table of all network interfaces / errors
host
netstat -i
/var
grep '{pattern}' {file}

4. Search for all Unix commands that match keyword - e.g apropos file.
118
/tmp
sudo
apropos

5. Shows command history
head
history
179
80

6. Host-specific system-wide configuration files
156
dig-x
/etc
man

7. Essential system binaries : init - ip - mount
dig
/sbin
uptime
/home

8. Prints contains of text file
dig-x
cat
mv
/boot

9. Changes directories
nslookup
curl
chgrp
cd

10. View a text file - View file but it scrolls.
/bin
netstat -i
history
cat {filename}

11. Displays Kernel information
/sbin
uname -a
chgrp
ifup

12. Reports a snapshot of the current processes
/etc
ps
netstat -r
110

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

14. SNMP
cal
uname -a
netstat
161

15. Removes a directory
/proc
179
rmdir
du

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

17. Lists all stopped/paused background. Resumes a stopped job
bg
/proc
/media
passwd

18. Displays kernel routing tables
netstat -r
top
grep
du

19. View a text file - Like more - with extra features
less {filename}
top
netstat -i
fg

20. Estimate file space usage
pwd
du
curl
cd

21. POP3
stat
uptime
110
/usr

22. Deletes a file
rm
cat {filename}
mkdir
/opt

23. View a text file - Use text editor and don't save.
ifconfig
du -a
pico {filename}
service

24. Prints file type
more {filename}
rm
file
finger

25. Displays current date and time
netstat -i
25
date
cp

26. Lists all files within a directory (including hidden)
cp
ifconfig
uptime
ls -a

27. Creates a file / updates it
/proc
110
touch
cat

28. Displays user information
finger
cal
touch
/var/log

29. Ftp Control
netstat -i
tail
21
/usr

30. Kerberos password
man
464
wget
/mnt

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

32. Creates a group for users
/proc
man
grep '{pattern}' {file}
groupadd

33. Displays manual or help document for a command/application
man
ls
more {filename}
/tmp

34. List files within a directory
rm
ls
grep
/bin

35. SFTP
115
history
/proc
ifup

36. SSH
/boot
22
/sbin
/etc

37. Reverse dns lookup
cat
dig-x
/var/log
/opt

38. Configuration for optional installed software
'/'
mkdir
stat
/opt

39. Changes password for a user
ifconfig -a
/var
passwd
22

40. Prints network connections - routing tables - interface stats - masq connections and multicast relationships
groupadd
usermod
netstat
464

41. Parses for string
killall
179
/usr
grep

42. DNS
156
115
53
kill

43. Creates a directory
mkdir
43
chown
cat

44. Prints current working directory
sudo
netstat
115
pwd

45. Users' home directories - containing saved files - personal settings - etc
/home
netstat -i
/bin
156

46. Displays all file space usage
ifconfig -a
du -a
netstat -r
du

47. HTTPS
443
usermod
netstat
/proc

48. Brings the most recent job to the foreground
fg
file
mail
date

49. Report file system disk space usage
/var/log
df
/root
du -a

50. Checks web connectivity (displays page contents)
curl
cal
ifup
ps