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RHCSA Commands

Subjects : certifications, it-skills, rhcsa

Instructions:

Answer 50 questions in 15 minutes.
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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. Adjust the persistent runlevel
rhn_register
# vi /etc/inittab change - id:3:initdefault:
/var/log/secure
rpm -q pkg.rpm --scripts

2. All messages sent at info priority or higher
/var/log/maillog
/etc/vsftpd/vsftpd.conf rpm -ql vsftpd
yum install firefox4
/var/log/messages

3. Install star
rpm -ql vsftpd
rpm localinstall pkg.rpm --nogpgcheck
# yum
yum provides

4. Contains RPM database
/var/lib/rpm
#iptables -I INPUT -p tcp --dport 21 -j Accept
vncviewer -via student@server6 localhost:2
$ tar czvf home.tar.gz /home

5. Search for command in the doc directory
insert as opposed to append
rpm -qc httpd
# ls -l /usr/share/doc | grep httpd
service sshd restart

6. Configuration file for system logs
# cat /var/log/messages | grep [Ff]ailed | less
/etc/rsyslog.conf
palimpsest
# virsh create /etc/libvert/qemu/vm_file_name.xml

7. Use lftp to connect
#rpm -qad [package name]
yum list
lftp student@server6 httpd configuration /etc/httpd/conf/httpd.conf rpm -ql httpd
logwatch

8. Acting as a router with forwarding
#rpm -qa | grep [package name]
service ntpd restart
ip masqu
chkconfig httpd on

9. Edit files with cat until the _EOF is found
/etc/sysconfig/network
/var/log/secure
tar czvf /tmp/etc.tar.gz /etc
cat >> some_file << _EOF

10. Process packets coming into the system
rsync -PHR /home/test1.html root@server6.example.com:/var/pub
system-config-date
IPtables input chain
/var/www/html/

11. Create a gzip-compressed backup of /etc in /tmp
rpm localinstall pkg.rpm --nogpgcheck
logwatch
/etc/rsyslog.conf
tar czvf /tmp/etc.tar.gz /etc

12. Process packets being forwarded through the system
#uname -r
#iptables -F
IPtables forward chain
yum update

13. Search for a package with firefox in the description
# vi /etc/inittab change - id:3:initdefault:
nautilus
rpm -qc httpd
yum search firefox

14. Stores filewall rules for the system.
/etc/sysconfig/vncservers rpm -ql tigervnc-server
system-config-date
/etc/rsyslog.conf
/etc/sysconfig/iptables

15. Remote file copy /home/test1.html to the /var/pub directory on server6
/etc/rsyslog.conf
ln -s /pub /var/www/html/pub
ssh-keygen
rsync /home/test1.html root@server6.example.com:/var/pub

16. Flush the firewall of all rules
IPtables forward chain
rpm -qc httpd
#iptables -F
yum list

17. List VMs
/etc/sysconfig/vncservers rpm -ql tigervnc-server
logwatch
add/remove software GUI
#virsh list

18. Grep with ignoring case
# grep -i
system-config-firewall tui
service vncserver restart chkconfig vncserver on
# vi /etc/inittab change - id:3:initdefault:

19. Set a VNC password
ssh-copy-id root@server6.example.com
/etc/rsyslog.conf
vncpasswd
/var/log/cron

20. Query all documentation with RPM
rpm -ql vsftpd
rpm -q pkg.rpm --scripts
#rpm -qad [package name]
ssh-keygen

21. Query configuration files with RPM
GUI menu system/administratrion/firewall
name-version-release.architecture.rpm
$ tar xzvf home.tar.gz /home
#rpm -qac [package name]

22. An example of searching through system logs with interpretation.
service sshd restart
system-config-firewall (Push the enable button and check the appropriate boxes. Check.)
/etc/ssh/sshd_config
# cat /var/log/messages | grep [Ff]ailed | less

23. Search for a package within all packages
#rpm -qa | grep [package name]
vsftpd
#ip addr show
service vncserver restart chkconfig vncserver on

24. Restart the ntpd service
# star -x -f=home.star
service ntpd restart
rsync /home/test1.html root@server6.example.com:/var/pub
yum update

25. handles dependencies while RPMs do not uses preconfigured repos
#yum grouplist
Fully Qualified Domain Name
#yum
#virsh list

26. Searches for page within the #man yum
$ tar czvf home.tar.gz /home
#yum info [package name]
man search :/repository
system-config-firewall (Push the enable button and check the appropriate boxes. Check.)

27. Start a VM
rhn_register
# virsh create /etc/libvert/qemu/vm_file_name.xml
/dev
/etc/yum.repos.d/

28. Start GUI for Firewall
system-config-firewall (Push the enable button and check the appropriate boxes. Check.)
name-version-release.architecture.rpm
/etc/ssh/sshd_config
rsync -PHR /home/test1.html root@server6.example.com:/var/pub

29. Backup a home directory on desktop6 to /tmp on server6
/etc/yum.repos.d/
/etc/sysconfig/iptables
yum install tigervnc-server
rsync /home root@server6.example.com:/tmp

30. Update a package
# cat /var/log/messages | grep [Ff]ailed | less
rpm -q pkg.rpm --scripts
yum update
/etc/sysconfig/resolv.conf

31. Display packages that match the pathname
yum provides
/usr/share/doc/initscripts-*/sysconfig.txt
system-config-firewall (Push the enable button and check the appropriate boxes. Check.)
service ntpd restart

32. Connect with VNC viewer securely
#iptables -F
nautilus
vncviewer -via student@server6 localhost:2
add/remove software GUI

33. Repos for yum
rpm -qc httpd
#uname -r
yum list
/etc/yum.repos.d

34. Process packets coming out of the system
#virsh list
/usr/share/doc/initscripts-*/sysconfig.txt
#yum groupremove "group name"
IPtables output chain

35. Install a pkg.rpm locally
# star -x -f=home.star
yum install firefox4
rpm localinstall pkg.rpm --nogpgcheck
# virsh create /etc/libvert/qemu/vm_file_name.xml

36. Primary configuration of ssh
#rpm -uvh [package name]
yum provides "*/sbin/sshd"
.spec
/etc/ssh/sshd_config

37. Append this to the /etc/rsyslog.conf to send mail to student@server6.example.com
#yum install [package name]
rsync /home root@server6.example.com:/tmp
MailTo=student@server6.example.com
nautilus

38. fqdn
/etc/sysconfig/network
*.debug /var/log/debug.log service rsyslog restart
name-version-release.architecture.rpm
Fully Qualified Domain Name

39. Enable anonymous users - disable local accounts - and disable any uploads to the FTP server
/usr/share/doc/initscripts-*/sysconfig.txt
/var/log/secure
/etc/vsftpd/vsftpd.conf rpm -ql vsftpd
service ntpd restart

40. Program to analyze standard log files and send a summary email to root
#ip addr show
[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
yum remove firefox4

41. Remove a package with yum
rpm -qp pkg.rpm
[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
#uname -r
#yum remove [package name]

42. Import a public key
#iptables -D INPUT -p tcp --dport 21 -j accpet
system-config-date
rpm --import [public key location]
vncpasswd

43. List installed and available packages
yum list
#iptables -I INPUT -p tcp --dport 21 -j Accept
#uname -r
# vi /etc/inittab change - id:3:initdefault:

44. Messages related to cron log
/var/log/cron
#rpm -qac [package name]
#iptables -F
service vncserver restart chkconfig vncserver on

45. Kill a VM
# cat /var/log/messages | grep [Ff]ailed | less
.spec
#yum grouplist
#virsh destroy domain-id

46. Should be done with yum and install as opposed to update if done with RPM option "i" should be used and not "u"
logwatch
cp /home/test1.html /var/www/html/test1.html
palimpsest
updating the kernel

47. GUI install / uninstall with yum
add/remove software GUI
#yum groupremove "group name"
ntpdate -b instructor
/etc/sysconfig/vncservers rpm -ql tigervnc-server

48. Query information files with RPM
#rpm -qi [package name]
IPtables input chain
/etc/services
service ntpd restart

49. Uninstall a package group with yum
#yum groupremove "group name"
insert as opposed to append
vsftpd
$ grep -v ^# /etc/nsswitch.conf

50. original DNS config file - still used
system-config-firewall tui
/etc/sysconfig/vncservers rpm -ql tigervnc-server
/etc/sysconfig/resolv.conf
GUI menu system/administratrion/firewall

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RHCSA Commands

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