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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. Rpm upgrade package u upgrade v verbose h hash
# yum
$ tar czvf home.tar.gz /home
Fully Qualified Domain Name
#rpm -uvh [package name]

2. Extract /tmp/etc.tar.gz to /etc
tar xvzf /tmp/etc.tar.gz /etc
add/remove software GUI
#uname -r
cp /home/test1.html /var/www/html/test1.html

3. Copy a public ssh key to server6
#yum remove [package name]
#ip addr show
/var/log/secure
ssh-copy-id root@server6.example.com

4. Import a public key
MailTo=student@server6.example.com
# star -xattr -H=exustar -c -f=home.star /home/
rpm --import [public key location]
rpm localinstall pkg.rpm --nogpgcheck

5. Where are HTML pages hosted?
/var/www/html/
tar cxtv
ln -s /pub /var/www/html/pub
/var/lib/rpm

6. Send all debug level messages to /var/log/debug.log
/var/log/secure
IPtables input chain
yum remove firefox4
*.debug /var/log/debug.log service rsyslog restart

7. An example of searching through system logs with interpretation.
/dev
vsftpd restart
# cat /var/log/messages | grep [Ff]ailed | less
.spec

8. GUI File Manager
IPtables output chain
rpm localinstall pkg.rpm --nogpgcheck
/usr/share/doc/initscripts-*/sysconfig.txt
nautilus

9. Grep for lines that do not match (-v)
$ grep -v ^# /etc/nsswitch.conf
#iptables -D INPUT -p tcp --dport 21 -j accpet
palimpsest
Fully Qualified Domain Name

10. Install the star compression tool create an archive with the star tool.
# star -xattr -H=exustar -c -f=home.star /home/
/var/log/cron
tar xvzf /tmp/etc.tar.gz /etc
cp /home/test1.html /var/www/html/test1.html

11. Install a package group with yum
/var/www/html/
#yum groupinstall "group name"
name-version-release.architecture.rpm
#iptables -D INPUT -p tcp --dport 21 -j accpet

12. Backup a home directory on desktop6 to /tmp on server6
#virsh list
ssh-copy-id root@server6.example.com
rsync /home root@server6.example.com:/tmp
/etc/sysconfig/network

13. See files installed with a package named vsftpd
ntpdate -b instructor
/etc/sysconfig/network
$ tar xzvf home.tar.gz /home
rpm -ql vsftpd

14. Repos for yum
IPtables output chain
tar czvf /tmp/etc.tar.gz /etc
/etc/yum.repos.d
/etc/sysconfig/vncservers rpm -ql tigervnc-server

15. Start GUI for Firewall
system-config-firewall (Push the enable button and check the appropriate boxes. Check.)
# renice -10 proc-id
system-config-firewall tui
IPtables output chain

16. handles dependencies while RPMs do not uses preconfigured repos
#rpm -ivh [package name]
/etc/sysconfig/iptables
/etc/yum.repos.d/
#yum

17. Persist FTP on boot
#rpm -qad [package name]
chkconfig vsftpd on
system-config-firewall tui
nautilus

18. Create a symbolic link to /pub on the FTP and name it pub
rpm localinstall pkg.rpm --nogpgcheck
yum provides "*/sbin/sshd"
ln -s /pub /var/www/html/pub
service sshd restart

19. Start a VM
#iptables -F
ntpdate -b instructor
#rpm -qac [package name]
# virsh create /etc/libvert/qemu/vm_file_name.xml

20. Searches for page within the #man yum
system-config-firewall (Push the enable button and check the appropriate boxes. Check.)
man search :/repository
yum provides
# star -xattr -H=exustar -c -f=home.star /home/

21. Create a gzip-compressed backup of /etc in /tmp
tar czvf /tmp/etc.tar.gz /etc
yum install tigervnc-server
rpm -qp pkg.rpm
rsync /home root@server6.example.com:/tmp

22. All messages sent at info priority or higher
#rpm -uvh [package name]
add/remove software GUI
/etc/sysconfig/network
/var/log/messages

23. original DNS config file - still used
/etc/sysconfig/resolv.conf
#iptables -F
.spec
rhn_register

24. Location of repo's
/etc/yum.repos.d/
tar fzj
vsftpd restart
logwatch

25. Search for a package with firefox in the description
vsftpd restart
yum search firefox
/var/lib/rpm
/etc/services

26. Shell config tool gropued like GUI firewall configurater.
system-config-firewall tui
#rpm -uvh [package name]
rpm localinstall pkg.rpm --nogpgcheck
service sshd restart

27. Connect with VNC viewer securely
tar xvzf /tmp/etc.tar.gz /etc
#yum info [package name]
vncviewer -via student@server6 localhost:2
yum info firefox4

28. Create a tar ball with gzip compression of the home dir
#iptables -L
GUI menu system/administratrion/firewall
/etc/yum.repos.d/
$ tar czvf home.tar.gz /home

29. Shows network / global network variables: NETWORKING=yes HOSTNAME=shuttlehosti GATEWAY=192.168.88.1
vncviewer -via student@server6 localhost:2
/etc/sysconfig/network
#virsh list
rpm -qp pkg.rpm

30. Start vsftp service
logwatch
#rpm -qi [package name]
rpm -ql vsftpd
vsftpd restart

31. Persist the web server on boot
add/remove software GUI
#yum groupremove "group name"
chkconfig httpd on
service sshd restart

32. File holding services - ports - protocols assoicated
/etc/services
/etc/ssh/sshd_config
#ip addr show
# cat /var/log/messages | grep [Ff]ailed | less

33. System config firewall
rpm -qc httpd
chkconfig httpd on
GUI menu system/administratrion/firewall
/etc/hosts

34. Configuration for VNC
updating the kernel
service sshd restart
/etc/sysconfig/vncservers rpm -ql tigervnc-server
vncviewer -via student@server6 localhost:2

35. Disk Utility Command
/var/lib/rpm
#virsh list
ssh-copy-id root@server6.example.com
palimpsest

36. FTP package used in RHEL 6
chkconfig vsftpd on
#iptables -L
vsftpd
tar fzj

37. Extract a star compressed file
/var/log/maillog
tar xvzf /tmp/etc.tar.gz /etc
tar cxtv
# star -x -f=home.star

38. Local file copy of /home/test1.html to /var/www/html/test1.html
service sshd restart
#rpm -ivh [package name]
/etc/sysconfig/network
cp /home/test1.html /var/www/html/test1.html

39. List VMs
#virsh list
rpm -qc httpd
IPtables input chain
vncpasswd

40. Determine which package provides SSH
name-version-release.architecture.rpm
service vncserver restart chkconfig vncserver on
IPtables forward chain
yum provides "*/sbin/sshd"

41. Uninstall a package group with yum
# star -xattr -H=exustar -c -f=home.star /home/
rpm -q pkg.rpm --scripts
ssh-keygen
#yum groupremove "group name"

42. Sync ntp time with the instructor
IPtables output chain
#yum remove [package name]
ntpdate -b instructor
vncpasswd

43. Install a package with yum
#yum install [package name]
$ grep -v ^# /etc/nsswitch.conf
#rpm -qa | grep [package name]
#yum remove [package name]

44. List scripts that can be run after installation of pkg.rpm
MailTo=student@server6.example.com
rpm -q pkg.rpm --scripts
vsftpd restart
ip masqu

45. Restart the ntpd service
# yum
system-config-firewall tui
service ntpd restart
tar xvzf /tmp/etc.tar.gz /etc

46. Append add to the end of the IPtables rules. insert will put rule above the deny all rule.
*.debug /var/log/debug.log service rsyslog restart
# star -x -f=home.star
insert as opposed to append
rpm -qc httpd

47. Adjust the persistent runlevel
*.debug /var/log/debug.log service rsyslog restart
#virsh list
# vi /etc/inittab change - id:3:initdefault:
.spec

48. Documentation about sysconfig network scripts
yum provides "*/sbin/sshd"
nautilus
#rpm -qa | grep [package name]
/usr/share/doc/initscripts-*/sysconfig.txt

49. Register on the RHN
rhn_register
yum install tigervnc-server
cat >> some_file << _EOF
*.debug /var/log/debug.log service rsyslog restart

50. Primary configuration of ssh
ntpdate -b instructor
rsync -a /home/test1.html root@server6.example.com:/var/pub
#virsh list
/etc/ssh/sshd_config