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. Enable anonymous users - disable local accounts - and disable any uploads to the FTP server
/etc/yum.repos.d
/etc/vsftpd/vsftpd.conf rpm -ql vsftpd
#iptables -F
#yum groupremove "group name"

2. Persist FTP on boot
ssh-keygen
#rpm -uvh [package name]
#rpm -qi [package name]
chkconfig vsftpd on

3. Use lftp to connect
#rpm -ivh [package name]
ln -s /pub /var/www/html/pub
lftp student@server6 httpd configuration /etc/httpd/conf/httpd.conf rpm -ql httpd
/usr/share/doc/initscripts-*/sysconfig.txt

4. Start vsftp service
/var/www/html/
/var/lib/rpm
/etc/sysconfig/resolv.conf
vsftpd restart

5. fqdn
#yum
ntpdate -b instructor
# renice -10 proc-id
Fully Qualified Domain Name

6. GUI File Manager
/dev
2>&1
nautilus
yum list

7. Kill a VM
service ntpd restart
#virsh destroy domain-id
ssh-keygen
yum update

8. See the configuration files installed with a package named httpd
/var/log/messages
rpm -qc httpd
tar czvf /tmp/etc.tar.gz /etc
tar fzj

9. Copy a public ssh key to server6
ssh-copy-id root@server6.example.com
#rpm -ivh [package name]
service sshd restart
rsync -a /home/test1.html root@server6.example.com:/var/pub

10. Where are HTML pages hosted?
/etc/sysconfig/iptables
/var/www/html/
system-config-date
/etc/ssh/sshd_config

11. Search for a package with firefox in the description
updating the kernel
rpm localinstall pkg.rpm --nogpgcheck
yum search firefox
vncpasswd

12. File holding services - ports - protocols assoicated
yum remove firefox4
yum list
/etc/services
# vi /etc/inittab change - id:3:initdefault:

13. Delete a rule from iptables
yum provides
#rpm -qa | grep [package name]
yum search firefox
#iptables -D INPUT -p tcp --dport 21 -j accpet

14. Process packets coming into the system
rsync /home root@server6.example.com:/tmp
IPtables input chain
tar xvzf /tmp/etc.tar.gz /etc
#rpm -qac [package name]

15. Persist the web server on boot
yum update
#iptables -D INPUT -p tcp --dport 21 -j accpet
#iptables -F
chkconfig httpd on

16. List scripts that can be run after installation of pkg.rpm
/etc/rsyslog.conf
cat >> some_file << _EOF
rpm -q pkg.rpm --scripts
GUI menu system/administratrion/firewall

17. Get information about a package named firefox4
#virsh destroy domain-id
/usr/share/doc/initscripts-*/sysconfig.txt
/etc/rsyslog.conf
yum info firefox4

18. Stores filewall rules for the system.
# ls -l /usr/share/doc | grep httpd
vsftpd
/var/log/maillog
/etc/sysconfig/iptables

19. RPM package naming
2>&1
/dev
add/remove software GUI
name-version-release.architecture.rpm

20. Extract /tmp/etc.tar.gz to /etc
#iptables -L
tar xvzf /tmp/etc.tar.gz /etc
cat >> some_file << _EOF
yum info firefox4

21. Search for command in the doc directory
vncpasswd
# yum
# renice -10 proc-id
# ls -l /usr/share/doc | grep httpd

22. GUI install / uninstall with yum
updating the kernel
#uname -r
add/remove software GUI
rhn_register

23. Disk Utility Command
#ip addr show
palimpsest
/etc/sysconfig/vncservers rpm -ql tigervnc-server
tar xvzf /tmp/etc.tar.gz /etc

24. See files installed with a package named vsftpd
/dev
chkconfig vsftpd on
system-config-firewall tui
rpm -ql vsftpd

25. Shell config tool gropued like GUI firewall configurater.
system-config-firewall tui
yum install firefox4
name-version-release.architecture.rpm
Fully Qualified Domain Name

26. Remote file copy /home/test1.html to the /var/pub directory on server6 while preserving metadata
rsync -a /home/test1.html root@server6.example.com:/var/pub
service sshd restart
rpm localinstall pkg.rpm --nogpgcheck
/var/log/maillog

27. Determine which package provides SSH
vncviewer -via student@server6 localhost:2
/etc/sysconfig/network
yum provides "*/sbin/sshd"
insert as opposed to append

28. Grep for lines that do not match (-v)
updating the kernel
/etc/services
$ grep -v ^# /etc/nsswitch.conf
ntpdate -b instructor

29. Disks available for partitions
/var/log/maillog
$ tar xzvf home.tar.gz /home
/dev
logwatch

30. Remote copy /home/test1.html to the /var/pub directory on server6 with progress - preserving hard links - and using relative path names
#rpm -uvh [package name]
yum provides "*/sbin/sshd"
rsync -PHR /home/test1.html root@server6.example.com:/var/pub
rpm -qc httpd

31. Get a list of package groups from yum
rsync /home/test1.html root@server6.example.com:/var/pub
/dev
#yum remove [package name]
#yum grouplist

32. An example of searching through system logs with interpretation.
add/remove software GUI
#yum info [package name]
# cat /var/log/messages | grep [Ff]ailed | less
service sshd restart

33. Basic add rule for iptables not persistant unless saved with #/etc/init.d/iptables save
#iptables -I INPUT -p tcp --dport 21 -j Accept
# star -xattr -H=exustar -c -f=home.star /home/
[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
2>&1

34. Register on the RHN
yum list
rhn_register
/etc/sysconfig/network
system-config-date

35. Import a public key
rpm -q pkg.rpm --scripts
rpm --import [public key location]
yum install firefox4
*.debug /var/log/debug.log service rsyslog restart

36. Query all documentation with RPM
add/remove software GUI
#rpm -qad [package name]
#rpm -qac [package name]
/etc/sysconfig/vncservers rpm -ql tigervnc-server

37. Start a VM
yum list
rpm -qc httpd
# virsh create /etc/libvert/qemu/vm_file_name.xml
#yum groupremove "group name"

38. Remote file copy /home/test1.html to the /var/pub directory on server6
rsync /home/test1.html root@server6.example.com:/var/pub
#virsh list
yum remove firefox4
vncviewer -via student@server6 localhost:2

39. Shows network / global network variables: NETWORKING=yes HOSTNAME=shuttlehosti GATEWAY=192.168.88.1
ntpdate -b instructor
yum update
yum install tigervnc-server
/etc/sysconfig/network

40. FTP package used in RHEL 6
rpm -ql vsftpd
vsftpd
#yum remove [package name]
lftp student@server6 httpd configuration /etc/httpd/conf/httpd.conf rpm -ql httpd

41. Documentation about sysconfig network scripts
#iptables -I INPUT -p tcp --dport 21 -j Accept
/usr/share/doc/initscripts-*/sysconfig.txt
/etc/services
logwatch

42. Process packets being forwarded through the system
insert as opposed to append
/etc/sysconfig/vncservers rpm -ql tigervnc-server
IPtables forward chain
/var/www/html/

43. Set a VNC password
#yum install [package name]
vncpasswd
system-config-firewall (Push the enable button and check the appropriate boxes. Check.)
add/remove software GUI

44. original DNS config file - still used
tar czvf /tmp/etc.tar.gz /etc
/etc/sysconfig/resolv.conf
#iptables -I INPUT -p tcp --dport 21 -j Accept
rhn_register

45. Install a pkg.rpm locally
yum remove firefox4
rpm localinstall pkg.rpm --nogpgcheck
chkconfig vsftpd on
# grep -i

46. List installed and available packages
# star -xattr -H=exustar -c -f=home.star /home/
yum list
yum search firefox
tar xvzf /tmp/etc.tar.gz /etc

47. Connect with VNC viewer securely
service vncserver restart chkconfig vncserver on
#rpm -ivh [package name]
system-config-firewall tui
vncviewer -via student@server6 localhost:2

48. Process packets coming out of the system
IPtables output chain
rpm localinstall pkg.rpm --nogpgcheck
nautilus
ssh-keygen

49. handles dependencies while RPMs do not uses preconfigured repos
/var/lib/rpm
#yum
MailTo=student@server6.example.com
yum provides "*/sbin/sshd"

50. Install a package with yum
logwatch
yum install tigervnc-server
/etc/yum.repos.d/
#yum install [package name]