Test your basic knowledge |

RHCSA Commands

Subjects : certifications, it-skills, rhcsa

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. Disk Utility Command
#yum
#iptables -F
palimpsest
yum install tigervnc-server

2. Configuration file for system logs
rpm localinstall pkg.rpm --nogpgcheck
# cat /var/log/messages | grep [Ff]ailed | less
ln -s /pub /var/www/html/pub
/etc/rsyslog.conf

3. Stores filewall rules for the system.
/etc/services
ntpdate -b instructor
/etc/sysconfig/iptables
yum info firefox4

4. Location of repo's
/etc/yum.repos.d/
/etc/sysconfig/resolv.conf
ln -s /pub /var/www/html/pub
#iptables -F

5. An example of searching through system logs with interpretation.
#iptables -F
# yum
# cat /var/log/messages | grep [Ff]ailed | less
rpm -q pkg.rpm --scripts

6. Determine which package provides SSH
yum provides
chkconfig vsftpd on
yum provides "*/sbin/sshd"
yum remove firefox4

7. Connect with VNC viewer securely
service vncserver restart chkconfig vncserver on
vncviewer -via student@server6 localhost:2
rpm -q pkg.rpm --scripts
*.debug /var/log/debug.log service rsyslog restart

8. See files installed with a package named vsftpd
GUI menu system/administratrion/firewall
rpm -ql vsftpd
/etc/yum.repos.d/
ntpdate -b instructor

9. Get more information on a package availale through yum
#yum info [package name]
system-config-firewall (Push the enable button and check the appropriate boxes. Check.)
palimpsest
yum provides "*/sbin/sshd"

10. Start vsftp service
cp /home/test1.html /var/www/html/test1.html
#rpm -qa | grep [package name]
vsftpd restart
rsync /home root@server6.example.com:/tmp

11. Package file named pkg.rpm
palimpsest
/var/log/cron
/etc/sysconfig/iptables
rpm -qp pkg.rpm

12. Import a public key
/var/www/html/
rpm --import [public key location]
ssh-copy-id root@server6.example.com
/var/log/maillog

13. Acting as a router with forwarding
yum list
ip masqu
man search :/repository
ln -s /pub /var/www/html/pub

14. Start GUI for Firewall
rpm localinstall pkg.rpm --nogpgcheck
system-config-firewall (Push the enable button and check the appropriate boxes. Check.)
#yum info [package name]
system-config-firewall tui

15. Kill a VM
/etc/sysconfig/iptables
MailTo=student@server6.example.com
/etc/services
#virsh destroy domain-id

16. Restart the ntpd service
# ls -l /usr/share/doc | grep httpd
/etc/sysconfig/network
service ntpd restart
MailTo=student@server6.example.com

17. Search for command in the doc directory
/var/log/messages
# vi /etc/inittab change - id:3:initdefault:
# ls -l /usr/share/doc | grep httpd
rsync -a /home/test1.html root@server6.example.com:/var/pub

18. Generate SSH Keys
MailTo=student@server6.example.com
rsync -PHR /home/test1.html root@server6.example.com:/var/pub
lftp student@server6 httpd configuration /etc/httpd/conf/httpd.conf rpm -ql httpd
ssh-keygen

19. Local file copy of /home/test1.html to /var/www/html/test1.html
cp /home/test1.html /var/www/html/test1.html
#yum
#yum groupinstall "group name"
service vncserver restart chkconfig vncserver on

20. Configuration for VNC
tar fzj
MailTo=student@server6.example.com
/etc/sysconfig/vncservers rpm -ql tigervnc-server
rpm -qp pkg.rpm

21. Install a package group with yum
#virsh destroy domain-id
yum install firefox4
#yum groupinstall "group name"
tar cxtv

22. Update a package
# star -x -f=home.star
yum update
#uname -r
$ tar czvf home.tar.gz /home

23. Should be done with yum and install as opposed to update if done with RPM option "i" should be used and not "u"
# star -xattr -H=exustar -c -f=home.star /home/
/dev
updating the kernel
tar xvzf /tmp/etc.tar.gz /etc

24. Query configuration files with RPM
#rpm -qac [package name]
/etc/yum.repos.d
#iptables -D INPUT -p tcp --dport 21 -j accpet
tar cxtv

25. GUI install / uninstall with yum
tar cxtv
add/remove software GUI
lftp student@server6 httpd configuration /etc/httpd/conf/httpd.conf rpm -ql httpd
#yum groupinstall "group name"

26. Show IP address with the IP command
#yum install [package name]
#ip addr show
#rpm -ivh [package name]
/var/www/html/

27. Copy a public ssh key to server6
/etc/yum.repos.d/
ssh-keygen
IPtables input chain
ssh-copy-id root@server6.example.com

28. See the configuration files installed with a package named httpd
rpm -qc httpd
/etc/sysconfig/vncservers rpm -ql tigervnc-server
/etc/sysconfig/iptables
GUI menu system/administratrion/firewall

29. Remove a package with yum
# star -x -f=home.star
/var/www/html/
# cat /var/log/messages | grep [Ff]ailed | less
#yum remove [package name]

30. Authentication related messages log
/var/log/secure
chkconfig httpd on
/etc/hosts
/var/log/maillog

31. Restart ssh services
service sshd restart
$ grep -v ^# /etc/nsswitch.conf
#yum install [package name]
yum provides

32. FTP package used in RHEL 6
vsftpd
/etc/sysconfig/resolv.conf
yum list
# star -xattr -H=exustar -c -f=home.star /home/

33. Process packets coming out of the system
# vi /etc/inittab change - id:3:initdefault:
IPtables output chain
# cat /var/log/messages | grep [Ff]ailed | less
yum provides "*/sbin/sshd"

34. Persist FTP on boot
tar fzj
chkconfig vsftpd on
#iptables -L
palimpsest

35. Display packages that match the pathname
/etc/vsftpd/vsftpd.conf rpm -ql vsftpd
IPtables input chain
rpm --import [public key location]
yum provides

36. Rpm upgrade package u upgrade v verbose h hash
#rpm -uvh [package name]
GUI menu system/administratrion/firewall
# yum
tar fzj

37. Use lftp to connect
#yum groupremove "group name"
GUI menu system/administratrion/firewall
lftp student@server6 httpd configuration /etc/httpd/conf/httpd.conf rpm -ql httpd
/var/lib/rpm

38. Where are HTML pages hosted?
/var/www/html/
#yum remove [package name]
/var/lib/rpm
/etc/sysconfig/network

39. List VMs
#yum info [package name]
name-version-release.architecture.rpm
/etc/ssh/sshd_config
#virsh list

40. Gets kernel version and release number
/var/log/messages
add/remove software GUI
#uname -r
lftp student@server6 httpd configuration /etc/httpd/conf/httpd.conf rpm -ql httpd

41. List iptables
#iptables -L
#ip addr show
yum list
vsftpd restart

42. Process packets being forwarded through the system
vncpasswd
IPtables forward chain
#ip addr show
updating the kernel

43. Append this to the /etc/rsyslog.conf to send mail to student@server6.example.com
#rpm -qad [package name]
chkconfig vsftpd on
MailTo=student@server6.example.com
/etc/services

44. Adjust the persistent runlevel
# vi /etc/inittab change - id:3:initdefault:
/etc/services
/etc/rsyslog.conf
lftp student@server6 httpd configuration /etc/httpd/conf/httpd.conf rpm -ql httpd

45. Extract a star compressed file
rpm -q pkg.rpm --scripts
*.debug /var/log/debug.log service rsyslog restart
/etc/sysconfig/iptables
# star -x -f=home.star

46. Create a symbolic link to /pub on the FTP and name it pub
#rpm -qad [package name]
logwatch
ln -s /pub /var/www/html/pub
rsync /home root@server6.example.com:/tmp

47. Grep for lines that do not match (-v)
$ grep -v ^# /etc/nsswitch.conf
.spec
/var/lib/rpm
rpm -qc httpd

48. Enable anonymous users - disable local accounts - and disable any uploads to the FTP server
IPtables input chain
yum remove firefox4
rpm -q pkg.rpm --scripts
/etc/vsftpd/vsftpd.conf rpm -ql vsftpd

49. fqdn
# ls -l /usr/share/doc | grep httpd
# grep -i
Fully Qualified Domain Name
nautilus

50. Repos for yum
#rpm -qad [package name]
.spec
#yum install [package name]
/etc/yum.repos.d