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. Persist the web server on boot
rsync /home/test1.html root@server6.example.com:/var/pub
$ tar xzvf home.tar.gz /home
chkconfig httpd on
#rpm -qac [package name]

2. handles dependencies while RPMs do not uses preconfigured repos
/etc/ssh/sshd_config
#yum
/var/log/cron
name-version-release.architecture.rpm

3. Copy a public ssh key to server6
tar czvf /tmp/etc.tar.gz /etc
.spec
# ls -l /usr/share/doc | grep httpd
ssh-copy-id root@server6.example.com

4. RPM package naming
IPtables forward chain
/etc/sysconfig/network
name-version-release.architecture.rpm
palimpsest

5. Persist FTP on boot
chkconfig vsftpd on
yum remove firefox4
rpm --import [public key location]
rsync /home root@server6.example.com:/tmp

6. fqdn
Fully Qualified Domain Name
logwatch
/etc/sysconfig/resolv.conf
$ tar czvf home.tar.gz /home

7. Process packets coming out of the system
# renice -10 proc-id
# grep -i
IPtables output chain
tar xvzf /tmp/etc.tar.gz /etc

8. Enable anonymous users - disable local accounts - and disable any uploads to the FTP server
/etc/vsftpd/vsftpd.conf rpm -ql vsftpd
/var/lib/rpm
yum remove firefox4
$ grep -v ^# /etc/nsswitch.conf

9. Uninstall a package group with yum
ip masqu
# star -x -f=home.star
yum install firefox4
#yum groupremove "group name"

10. Start a VM
# virsh create /etc/libvert/qemu/vm_file_name.xml
system-config-date
#yum
#yum info [package name]

11. Grep for lines that do not match (-v)
/var/log/messages
/var/log/cron
#virsh destroy domain-id
$ grep -v ^# /etc/nsswitch.conf

12. Query information files with RPM
#rpm -qi [package name]
# cat /var/log/messages | grep [Ff]ailed | less
# renice -10 proc-id
/etc/services

13. Set a VNC password
# renice -10 proc-id
tar cxtv
/etc/sysconfig/vncservers rpm -ql tigervnc-server
vncpasswd

14. Stores filewall rules for the system.
#yum
/etc/services
#yum remove [package name]
/etc/sysconfig/iptables

15. Query configuration files with RPM
/etc/sysconfig/vncservers rpm -ql tigervnc-server
# ls -l /usr/share/doc | grep httpd
#rpm -qac [package name]
/etc/sysconfig/resolv.conf

16. Install a package named firefox4
#iptables -F
yum install firefox4
ln -s /pub /var/www/html/pub
yum provides

17. Register on the RHN
rhn_register
vncviewer -via student@server6 localhost:2
yum update
rpm -qp pkg.rpm

18. Create a gzip-compressed backup of /etc in /tmp
tar czvf /tmp/etc.tar.gz /etc
rpm -qp pkg.rpm
yum update
insert as opposed to append

19. Use lftp to connect
palimpsest
lftp student@server6 httpd configuration /etc/httpd/conf/httpd.conf rpm -ql httpd
yum list
/var/lib/rpm

20. GUI install / uninstall with yum
chkconfig vsftpd on
add/remove software GUI
vncpasswd
GUI menu system/administratrion/firewall

21. Messages related to cron log
IPtables input chain
/var/log/cron
#rpm -ivh [package name]
rpm -ql vsftpd

22. Extract /tmp/etc.tar.gz to /etc
/etc/sysconfig/resolv.conf
/var/log/messages
/etc/sysconfig/network
tar xvzf /tmp/etc.tar.gz /etc

23. Restart ssh services
system-config-firewall tui
tar cxtv
service sshd restart
# cat /var/log/messages | grep [Ff]ailed | less

24. System config firewall
rsync /home/test1.html root@server6.example.com:/var/pub
# yum
yum install tigervnc-server
GUI menu system/administratrion/firewall

25. Repos for yum
yum install firefox4
#rpm -qa | grep [package name]
tar xvzf /tmp/etc.tar.gz /etc
/etc/yum.repos.d

26. Install star
# yum
IPtables forward chain
ln -s /pub /var/www/html/pub
/etc/sysconfig/network

27. Basic add rule for iptables not persistant unless saved with #/etc/init.d/iptables save
#iptables -I INPUT -p tcp --dport 21 -j Accept
#rpm -qa | grep [package name]
/var/www/html/
name-version-release.architecture.rpm

28. Generate SSH Keys
ssh-keygen
#rpm -ivh [package name]
man search :/repository
vsftpd restart

29. An example of searching through system logs with interpretation.
service sshd restart
vsftpd
insert as opposed to append
# cat /var/log/messages | grep [Ff]ailed | less

30. Extract a star compressed file
rsync -a /home/test1.html root@server6.example.com:/var/pub
# yum
# star -x -f=home.star
system-config-firewall (Push the enable button and check the appropriate boxes. Check.)

31. Restart vnc and persist on boot
#uname -r
system-config-date
#yum install [package name]
service vncserver restart chkconfig vncserver on

32. Process packets being forwarded through the system
IPtables forward chain
#rpm -uvh [package name]
tar fzj
.spec

33. Delete a rule from iptables
yum info firefox4
#virsh destroy domain-id
#iptables -D INPUT -p tcp --dport 21 -j accpet
#yum info [package name]

34. Append add to the end of the IPtables rules. insert will put rule above the deny all rule.
/etc/hosts
/etc/sysconfig/network
system-config-firewall tui
insert as opposed to append

35. Configuration file for system logs
/etc/rsyslog.conf
#yum grouplist
vncpasswd
/var/log/messages

36. Searches for page within the #man yum
man search :/repository
Fully Qualified Domain Name
rpm --import [public key location]
/etc/yum.repos.d/

37. Display packages that match the pathname
yum list
#uname -r
IPtables output chain
yum provides

38. Redirect errors to std out
2>&1
vsftpd restart
#rpm -uvh [package name]
rpm -qc httpd

39. Rpm upgrade package u upgrade v verbose h hash
/var/lib/rpm
MailTo=student@server6.example.com
2>&1
#rpm -uvh [package name]

40. Disk Utility Command
MailTo=student@server6.example.com
palimpsest
# renice -10 proc-id
# grep -i

41. Remote file copy /home/test1.html to the /var/pub directory on server6
rsync /home/test1.html root@server6.example.com:/var/pub
rpm -ql vsftpd
rhn_register
system-config-firewall (Push the enable button and check the appropriate boxes. Check.)

42. All messages sent at info priority or higher
yum info firefox4
# renice -10 proc-id
/etc/sysconfig/vncservers rpm -ql tigervnc-server
/var/log/messages

43. Program to analyze standard log files and send a summary email to root
man search :/repository
#yum groupinstall "group name"
[repo identifier] name=[repo name] baseurl=[repo url] enabled = 1 gpgcheck = 1 (0 for local system) gpgkey = file:///etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release -file:///etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-beta
logwatch

44. Local file copy of /home/test1.html to /var/www/html/test1.html
chkconfig httpd on
insert as opposed to append
cp /home/test1.html /var/www/html/test1.html
nautilus

45. Flush the firewall of all rules
logwatch
/etc/sysconfig/iptables
# grep -i
#iptables -F

46. Documentation about sysconfig network scripts
/usr/share/doc/initscripts-*/sysconfig.txt
#rpm -qac [package name]
insert as opposed to append
yum info firefox4

47. Show IP address with the IP command
#ip addr show
yum install firefox4
ip masqu
yum list

48. Acting as a router with forwarding
/var/log/messages
/etc/vsftpd/vsftpd.conf rpm -ql vsftpd
#iptables -I INPUT -p tcp --dport 21 -j Accept
ip masqu

49. Start vsftp service
vsftpd restart
#yum info [package name]
yum list
# renice -10 proc-id

50. Start the GUI for date configuration
cp /home/test1.html /var/www/html/test1.html
#rpm -uvh [package name]
system-config-date
insert as opposed to append