Test your basic knowledge |

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. An example of searching through system logs with interpretation.
# cat /var/log/messages | grep [Ff]ailed | less
rsync /home root@server6.example.com:/tmp
#rpm -qi [package name]
IPtables output chain

2. Connect with VNC viewer securely
vncviewer -via student@server6 localhost:2
rpm localinstall pkg.rpm --nogpgcheck
yum remove firefox4
rpm -q pkg.rpm --scripts

3. Send all debug level messages to /var/log/debug.log
/etc/hosts
IPtables output chain
system-config-date
*.debug /var/log/debug.log service rsyslog restart

4. Configuration for VNC
/etc/sysconfig/vncservers rpm -ql tigervnc-server
rsync /home root@server6.example.com:/tmp
$ tar czvf home.tar.gz /home
/var/log/secure

5. Search for a package within all packages
ntpdate -b instructor
#uname -r
add/remove software GUI
#rpm -qa | grep [package name]

6. Generate SSH Keys
cp /home/test1.html /var/www/html/test1.html
#yum install [package name]
ssh-keygen
#rpm -qa | grep [package name]

7. Shell config tool gropued like GUI firewall configurater.
yum list
system-config-firewall tui
$ tar xzvf home.tar.gz /home
GUI menu system/administratrion/firewall

8. Disks available for partitions
vncviewer -via student@server6 localhost:2
/dev
/etc/yum.repos.d/
#iptables -F

9. Stores filewall rules for the system.
/var/log/cron
#rpm -qad [package name]
#rpm -ivh [package name]
/etc/sysconfig/iptables

10. Repos for yum
/etc/yum.repos.d
yum search firefox
/var/www/html/
#rpm -uvh [package name]

11. Extract a star compressed file
#yum
yum remove firefox4
# star -x -f=home.star
/etc/sysconfig/iptables

12. Documentation about sysconfig network scripts
name-version-release.architecture.rpm
/usr/share/doc/initscripts-*/sysconfig.txt
insert as opposed to append
/etc/sysconfig/vncservers rpm -ql tigervnc-server

13. Remove a package with yum
ip masqu
# renice -10 proc-id
yum remove firefox4
#yum remove [package name]

14. Search for command in the doc directory
chkconfig vsftpd on
updating the kernel
# renice -10 proc-id
# ls -l /usr/share/doc | grep httpd

15. System config firewall
vsftpd restart
GUI menu system/administratrion/firewall
#uname -r
logwatch

16. File containing information to create rpm package - RPM packages contain these files: libraries or application - any documentation - any configuration files
*.debug /var/log/debug.log service rsyslog restart
.spec
system-config-date
[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

17. Messages related to cron log
system-config-date
/var/log/cron
IPtables input chain
vsftpd

18. Install a package group with yum
#yum groupinstall "group name"
#rpm -uvh [package name]
lftp student@server6 httpd configuration /etc/httpd/conf/httpd.conf rpm -ql httpd
/dev

19. Set process priority with renice - -20 highest - 20 lowest - 0 is default
# renice -10 proc-id
tar czvf /tmp/etc.tar.gz /etc
/etc/sysconfig/vncservers rpm -ql tigervnc-server
.spec

20. Show IP address with the IP command
/etc/sysconfig/iptables
IPtables forward chain
#rpm -qi [package name]
#ip addr show

21. Extract /tmp/etc.tar.gz to /etc
ntpdate -b instructor
/var/log/secure
[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
tar xvzf /tmp/etc.tar.gz /etc

22. Stores IPtables rules (filter) chains - input forward output are persistant
rsync -a /home/test1.html root@server6.example.com:/var/pub
#rpm -qad [package name]
service ntpd restart
/etc/sysconfig/iptables

23. Create a gzip-compressed backup of /etc in /tmp
tar czvf /tmp/etc.tar.gz /etc
system-config-date
service sshd restart
man search :/repository

24. Append add to the end of the IPtables rules. insert will put rule above the deny all rule.
insert as opposed to append
/etc/rsyslog.conf
# star -x -f=home.star
tar cxtv

25. List installed and available packages
yum list
rsync -PHR /home/test1.html root@server6.example.com:/var/pub
/etc/yum.repos.d
$ tar czvf home.tar.gz /home

26. Grep for lines that do not match (-v)
#iptables -L
#yum install [package name]
$ grep -v ^# /etc/nsswitch.conf
#rpm -qac [package name]

27. Local file copy of /home/test1.html to /var/www/html/test1.html
yum remove firefox4
2>&1
ssh-copy-id root@server6.example.com
cp /home/test1.html /var/www/html/test1.html

28. Start a VM
# virsh create /etc/libvert/qemu/vm_file_name.xml
rpm localinstall pkg.rpm --nogpgcheck
name-version-release.architecture.rpm
/etc/vsftpd/vsftpd.conf rpm -ql vsftpd

29. Create a tar ball with gzip compression of the home dir
$ tar czvf home.tar.gz /home
yum provides "*/sbin/sshd"
#rpm -ivh [package name]
# ls -l /usr/share/doc | grep httpd

30. Adjust the persistent runlevel
tar fzj
#rpm -uvh [package name]
tar cxtv
# vi /etc/inittab change - id:3:initdefault:

31. Start the GUI for date configuration
ntpdate -b instructor
/var/log/messages
system-config-date
insert as opposed to append

32. tar options for create - extract - test - and verbose
tar cxtv
# ls -l /usr/share/doc | grep httpd
#iptables -L
updating the kernel

33. Import a public key
service sshd restart
lftp student@server6 httpd configuration /etc/httpd/conf/httpd.conf rpm -ql httpd
rsync /home/test1.html root@server6.example.com:/var/pub
rpm --import [public key location]

34. Remote file copy /home/test1.html to the /var/pub directory on server6 while preserving metadata
/var/log/cron
rsync -a /home/test1.html root@server6.example.com:/var/pub
logwatch
service vncserver restart chkconfig vncserver on

35. Package file named pkg.rpm
#rpm -qad [package name]
rpm -qp pkg.rpm
rsync -a /home/test1.html root@server6.example.com:/var/pub
#iptables -F

36. See the configuration files installed with a package named httpd
system-config-date
rhn_register
rpm -qc httpd
cp /home/test1.html /var/www/html/test1.html

37. Persist FTP on boot
/etc/sysconfig/network
rpm -qc httpd
chkconfig vsftpd on
#iptables -D INPUT -p tcp --dport 21 -j accpet

38. Process packets coming out of the system
tar czvf /tmp/etc.tar.gz /etc
/var/log/cron
IPtables output chain
rpm -qp pkg.rpm

39. GUI install / uninstall with yum
add/remove software GUI
tar czvf /tmp/etc.tar.gz /etc
yum search firefox
IPtables forward chain

40. Query information files with RPM
/etc/sysconfig/iptables
#yum
#rpm -qi [package name]
yum provides "*/sbin/sshd"

41. List iptables
rpm -qc httpd
chkconfig vsftpd on
#iptables -L
# star -x -f=home.star

42. Install a pkg.rpm locally
service sshd restart
rpm localinstall pkg.rpm --nogpgcheck
/etc/vsftpd/vsftpd.conf rpm -ql vsftpd
#rpm -qad [package name]

43. Query all documentation with RPM
chkconfig httpd on
#rpm -qad [package name]
/etc/sysconfig/network
/var/lib/rpm

44. Remote copy /home/test1.html to the /var/pub directory on server6 with progress - preserving hard links - and using relative path names
rsync -PHR /home/test1.html root@server6.example.com:/var/pub
/etc/sysconfig/iptables
#iptables -L
tar cxtv

45. File holding services - ports - protocols assoicated
tar fzj
#yum install [package name]
yum search firefox
/etc/services

46. Remote file copy /home/test1.html to the /var/pub directory on server6
#yum install [package name]
#yum
rsync /home/test1.html root@server6.example.com:/var/pub
#yum groupinstall "group name"

47. Should be done with yum and install as opposed to update if done with RPM option "i" should be used and not "u"
$ tar czvf home.tar.gz /home
insert as opposed to append
system-config-firewall tui
updating the kernel

48. Install the star compression tool create an archive with the star tool.
# star -xattr -H=exustar -c -f=home.star /home/
# cat /var/log/messages | grep [Ff]ailed | less
rpm localinstall pkg.rpm --nogpgcheck
chkconfig vsftpd on

49. Kill a VM
#virsh destroy domain-id
#rpm -qa | grep [package name]
/var/log/cron
name-version-release.architecture.rpm

50. original DNS config file - still used
Fully Qualified Domain Name
/etc/sysconfig/resolv.conf
#iptables -D INPUT -p tcp --dport 21 -j accpet
yum search firefox

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Can you answer 50 questions in 15 minutes?

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Test your basic knowledge |

RHCSA Commands

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