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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. Restart vnc and persist on boot
service vncserver restart chkconfig vncserver on
# ls -l /usr/share/doc | grep httpd
# star -xattr -H=exustar -c -f=home.star /home/
system-config-firewall (Push the enable button and check the appropriate boxes. Check.)

2. Documentation about sysconfig network scripts
rpm --import [public key location]
tar cxtv
# cat /var/log/messages | grep [Ff]ailed | less
/usr/share/doc/initscripts-*/sysconfig.txt

3. Authentication related messages log
[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
yum info firefox4
/var/log/secure
rsync -a /home/test1.html root@server6.example.com:/var/pub

4. File containing information to create rpm package - RPM packages contain these files: libraries or application - any documentation - any configuration files
#virsh list
nautilus
# grep -i
.spec

5. Create a tar ball with gzip compression of the home dir
$ tar czvf home.tar.gz /home
/var/log/cron
rpm -ql vsftpd
insert as opposed to append

6. Adjust the persistent runlevel
# vi /etc/inittab change - id:3:initdefault:
[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
# yum
/etc/sysconfig/iptables

7. List installed and available packages
rhn_register
#iptables -I INPUT -p tcp --dport 21 -j Accept
rpm -ql vsftpd
yum list

8. Restart ssh services
service sshd restart
/usr/share/doc/initscripts-*/sysconfig.txt
logwatch
#iptables -I INPUT -p tcp --dport 21 -j Accept

9. Where are HTML pages hosted?
ntpdate -b instructor
/var/www/html/
# vi /etc/inittab change - id:3:initdefault:
insert as opposed to append

10. Messages related to cron log
# renice -10 proc-id
/etc/sysconfig/vncservers rpm -ql tigervnc-server
[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
/var/log/cron

11. Program to analyze standard log files and send a summary email to root
vncviewer -via student@server6 localhost:2
#rpm -qac [package name]
logwatch
.spec

12. Basic add rule for iptables not persistant unless saved with #/etc/init.d/iptables save
#iptables -I INPUT -p tcp --dport 21 -j Accept
#virsh destroy domain-id
IPtables input chain
yum list

13. Extract a star compressed file
yum install tigervnc-server
# star -x -f=home.star
nautilus
# vi /etc/inittab change - id:3:initdefault:

14. Determine which package provides SSH
/etc/services
# ls -l /usr/share/doc | grep httpd
# vi /etc/inittab change - id:3:initdefault:
yum provides "*/sbin/sshd"

15. Gets kernel version and release number
/etc/sysconfig/network
#virsh destroy domain-id
#uname -r
/etc/ssh/sshd_config

16. Redirect errors to std out
tar cxtv
ssh-keygen
2>&1
rsync -a /home/test1.html root@server6.example.com:/var/pub

17. Search for a package within all packages
#yum
tar xvzf /tmp/etc.tar.gz /etc
#rpm -qa | grep [package name]
yum update

18. Backup a home directory on desktop6 to /tmp on server6
rsync /home root@server6.example.com:/tmp
#iptables -L
#ip addr show
cat >> some_file << _EOF

19. File holding services - ports - protocols assoicated
logwatch
add/remove software GUI
#rpm -qad [package name]
/etc/services

20. Query information files with RPM
rpm -qp pkg.rpm
#rpm -qi [package name]
#yum grouplist
service sshd restart

21. Extract /tmp/etc.tar.gz to /etc
yum search firefox
yum list
2>&1
tar xvzf /tmp/etc.tar.gz /etc

22. Query configuration files with RPM
#rpm -qac [package name]
2>&1
chkconfig httpd on
#rpm -qa | grep [package name]

23. An example of searching through system logs with interpretation.
/etc/rsyslog.conf
chkconfig vsftpd on
# cat /var/log/messages | grep [Ff]ailed | less
updating the kernel

24. fqdn
add/remove software GUI
insert as opposed to append
GUI menu system/administratrion/firewall
Fully Qualified Domain Name

25. Persist the web server on boot
MailTo=student@server6.example.com
yum update
chkconfig httpd on
cat >> some_file << _EOF

26. Sync ntp time with the instructor
tar xvzf /tmp/etc.tar.gz /etc
# virsh create /etc/libvert/qemu/vm_file_name.xml
ntpdate -b instructor
nautilus

27. Send all debug level messages to /var/log/debug.log
yum list
*.debug /var/log/debug.log service rsyslog restart
#yum grouplist
IPtables forward chain

28. System config firewall
GUI menu system/administratrion/firewall
#iptables -F
chkconfig httpd on
service vncserver restart chkconfig vncserver on

29. tar options for file name - gzip - and bzip2
rsync -PHR /home/test1.html root@server6.example.com:/var/pub
tar fzj
# star -xattr -H=exustar -c -f=home.star /home/
# virsh create /etc/libvert/qemu/vm_file_name.xml

30. Configuration file for system logs
ln -s /pub /var/www/html/pub
yum remove firefox4
/etc/rsyslog.conf
#iptables -F

31. Acting as a router with forwarding
rhn_register
yum info firefox4
ip masqu
rpm localinstall pkg.rpm --nogpgcheck

32. Copy a public ssh key to server6
ssh-copy-id root@server6.example.com
/etc/sysconfig/iptables
.spec
/dev

33. Install a package with yum
yum install tigervnc-server
#yum install [package name]
2>&1
#rpm -qi [package name]

34. Query all documentation with RPM
system-config-firewall tui
/etc/services
/usr/share/doc/initscripts-*/sysconfig.txt
#rpm -qad [package name]

35. Install the VNC server package
yum install tigervnc-server
#yum grouplist
palimpsest
yum provides

36. Primary configuration of ssh
/etc/rsyslog.conf
/usr/share/doc/initscripts-*/sysconfig.txt
/etc/sysconfig/network
/etc/ssh/sshd_config

37. Start vsftp service
vsftpd restart
rpm --import [public key location]
GUI menu system/administratrion/firewall
# star -x -f=home.star

38. GUI install / uninstall with yum
system-config-firewall (Push the enable button and check the appropriate boxes. Check.)
/var/lib/rpm
vncpasswd
add/remove software GUI

39. Flush the firewall of all rules
/etc/rsyslog.conf
#iptables -F
# yum
/etc/hosts

40. Remote file copy /home/test1.html to the /var/pub directory on server6
service sshd restart
/var/log/messages
/etc/yum.repos.d
rsync /home/test1.html root@server6.example.com:/var/pub

41. Get information about a package named firefox4
# star -x -f=home.star
yum info firefox4
rsync -PHR /home/test1.html root@server6.example.com:/var/pub
rpm -q pkg.rpm --scripts

42. Set a VNC password
system-config-firewall tui
ip masqu
vncpasswd
# grep -i

43. Process packets coming out of the system
tar fzj
$ tar czvf home.tar.gz /home
IPtables output chain
/var/log/maillog

44. Location of repo's
2>&1
vncviewer -via student@server6 localhost:2
#rpm -qa | grep [package name]
/etc/yum.repos.d/

45. Show IP address with the IP command
#ip addr show
Fully Qualified Domain Name
yum search firefox
#rpm -qa | grep [package name]

46. Connect with VNC viewer securely
vncviewer -via student@server6 localhost:2
#iptables -I INPUT -p tcp --dport 21 -j Accept
rpm -ql vsftpd
/etc/sysconfig/resolv.conf

47. Kill a VM
#virsh destroy domain-id
/dev
*.debug /var/log/debug.log service rsyslog restart
rsync /home/test1.html root@server6.example.com:/var/pub

48. Update a package
#iptables -D INPUT -p tcp --dport 21 -j accpet
[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
.spec
yum update

49. Remote copy /home/test1.html to the /var/pub directory on server6 with progress - preserving hard links - and using relative path names
#rpm -qi [package name]
IPtables input chain
rsync -PHR /home/test1.html root@server6.example.com:/var/pub
#iptables -L

50. Shows network / global network variables: NETWORKING=yes HOSTNAME=shuttlehosti GATEWAY=192.168.88.1
/usr/share/doc/initscripts-*/sysconfig.txt
yum provides
tar cxtv
/etc/sysconfig/network

Can you answer 50 questions in 15 minutes?

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RHCSA Commands

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