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. Local host file (contains hostname). Can contain local system DNS.
rpm -qc httpd
vncpasswd
system-config-firewall tui
/etc/hosts

2. GUI install / uninstall with yum
add/remove software GUI
/etc/sysconfig/iptables
rpm -qp pkg.rpm
#iptables -I INPUT -p tcp --dport 21 -j Accept

3. Register on the RHN
cp /home/test1.html /var/www/html/test1.html
#yum
tar xvzf /tmp/etc.tar.gz /etc
rhn_register

4. Start vsftp service
yum remove firefox4
add/remove software GUI
vsftpd restart
yum info firefox4

5. Update a package
tar cxtv
ln -s /pub /var/www/html/pub
yum update
/usr/share/doc/initscripts-*/sysconfig.txt

6. File holding services - ports - protocols assoicated
# ls -l /usr/share/doc | grep httpd
#rpm -qad [package name]
/etc/services
/etc/ssh/sshd_config

7. Create a symbolic link to /pub on the FTP and name it pub
service sshd restart
$ tar xzvf home.tar.gz /home
#virsh destroy domain-id
ln -s /pub /var/www/html/pub

8. Shows network / global network variables: NETWORKING=yes HOSTNAME=shuttlehosti GATEWAY=192.168.88.1
/etc/services
#virsh destroy domain-id
system-config-date
/etc/sysconfig/network

9. Install the star compression tool create an archive with the star tool.
# star -xattr -H=exustar -c -f=home.star /home/
service vncserver restart chkconfig vncserver on
rpm -q pkg.rpm --scripts
#virsh list

10. Copy a public ssh key to server6
/var/log/messages
vncviewer -via student@server6 localhost:2
ssh-copy-id root@server6.example.com
tar xvzf /tmp/etc.tar.gz /etc

11. Program to analyze standard log files and send a summary email to root
add/remove software GUI
logwatch
#virsh list
updating the kernel

12. Messages related to cron log
/etc/sysconfig/resolv.conf
GUI menu system/administratrion/firewall
# vi /etc/inittab change - id:3:initdefault:
/var/log/cron

13. Flush the firewall of all rules
#yum
/var/log/messages
#iptables -F
#ip addr show

14. List VMs
/etc/sysconfig/iptables
#yum groupinstall "group name"
#virsh list
rpm -ql vsftpd

15. tar options for file name - gzip - and bzip2
tar fzj
rpm localinstall pkg.rpm --nogpgcheck
/dev
/etc/rsyslog.conf

16. Extract a star compressed file
service sshd restart
tar cxtv
# star -x -f=home.star
MailTo=student@server6.example.com

17. An example of searching through system logs with interpretation.
# cat /var/log/messages | grep [Ff]ailed | less
yum provides "*/sbin/sshd"
#uname -r
rhn_register

18. Kill a VM
#virsh destroy domain-id
/etc/sysconfig/iptables
ssh-copy-id root@server6.example.com
ln -s /pub /var/www/html/pub

19. Generate SSH Keys
rpm --import [public key location]
yum provides "*/sbin/sshd"
cat >> some_file << _EOF
ssh-keygen

20. Display packages that match the pathname
vncviewer -via student@server6 localhost:2
yum provides
#rpm -ivh [package name]
system-config-firewall tui

21. See the configuration files installed with a package named httpd
rsync -PHR /home/test1.html root@server6.example.com:/var/pub
# yum
rpm --import [public key location]
rpm -qc httpd

22. Set process priority with renice - -20 highest - 20 lowest - 0 is default
#yum install [package name]
# renice -10 proc-id
# star -xattr -H=exustar -c -f=home.star /home/
# cat /var/log/messages | grep [Ff]ailed | less

23. GUI File Manager
#iptables -F
yum search firefox
# cat /var/log/messages | grep [Ff]ailed | less
nautilus

24. Search for a package with firefox in the description
#rpm -ivh [package name]
# star -x -f=home.star
IPtables forward chain
yum search firefox

25. Disk Utility Command
cp /home/test1.html /var/www/html/test1.html
# vi /etc/inittab change - id:3:initdefault:
palimpsest
#yum groupremove "group name"

26. Install the VNC server package
system-config-firewall (Push the enable button and check the appropriate boxes. Check.)
/var/www/html/
#rpm -qad [package name]
yum install tigervnc-server

27. Searches for page within the #man yum
# star -xattr -H=exustar -c -f=home.star /home/
#yum grouplist
/etc/sysconfig/iptables
man search :/repository

28. Query information files with RPM
/etc/services
#virsh list
rpm localinstall pkg.rpm --nogpgcheck
#rpm -qi [package name]

29. Grep with ignoring case
# grep -i
rpm -ql vsftpd
vncviewer -via student@server6 localhost:2
vsftpd restart

30. Edit files with cat until the _EOF is found
ssh-copy-id root@server6.example.com
cat >> some_file << _EOF
updating the kernel
/var/www/html/

31. Repo config file
man search :/repository
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
rpm --import [public key location]

32. Location of repo's
/etc/yum.repos.d/
yum install tigervnc-server
rsync -PHR /home/test1.html root@server6.example.com:/var/pub
yum update

33. Email related messages log
/etc/rsyslog.conf
service vncserver restart chkconfig vncserver on
yum provides "*/sbin/sshd"
/var/log/maillog

34. Install with RPM
# grep -i
/var/log/maillog
ssh-keygen
#rpm -ivh [package name]

35. Import a public key
rpm --import [public key location]
man search :/repository
/etc/services
yum search firefox

36. Persist FTP on boot
chkconfig vsftpd on
yum install tigervnc-server
/etc/sysconfig/iptables
#rpm -qac [package name]

37. Restart the ntpd service
#rpm -ivh [package name]
service ntpd restart
cat >> some_file << _EOF
ssh-keygen

38. FTP package used in RHEL 6
vsftpd
ntpdate -b instructor
# cat /var/log/messages | grep [Ff]ailed | less
rpm -qc httpd

39. Set a VNC password
vncpasswd
IPtables input chain
/var/log/messages
chkconfig httpd on

40. Remove a package with yum
#yum groupremove "group name"
#uname -r
#yum remove [package name]
rpm -ql vsftpd

41. handles dependencies while RPMs do not uses preconfigured repos
service vncserver restart chkconfig vncserver on
/etc/sysconfig/vncservers rpm -ql tigervnc-server
/var/lib/rpm
#yum

42. Enable anonymous users - disable local accounts - and disable any uploads to the FTP server
tar cxtv
vncviewer -via student@server6 localhost:2
nautilus
/etc/vsftpd/vsftpd.conf rpm -ql vsftpd

43. Local file copy of /home/test1.html to /var/www/html/test1.html
rpm -qc httpd
cp /home/test1.html /var/www/html/test1.html
yum provides "*/sbin/sshd"
*.debug /var/log/debug.log service rsyslog restart

44. original DNS config file - still used
lftp student@server6 httpd configuration /etc/httpd/conf/httpd.conf rpm -ql httpd
[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
system-config-firewall (Push the enable button and check the appropriate boxes. Check.)
/etc/sysconfig/resolv.conf

45. Start a VM
# virsh create /etc/libvert/qemu/vm_file_name.xml
/var/log/messages
/var/log/cron
tar xvzf /tmp/etc.tar.gz /etc

46. Remove a package named firefox4
MailTo=student@server6.example.com
/var/log/cron
system-config-firewall (Push the enable button and check the appropriate boxes. Check.)
yum remove firefox4

47. Process packets being forwarded through the system
vncpasswd
rpm -q pkg.rpm --scripts
IPtables forward chain
tar xvzf /tmp/etc.tar.gz /etc

48. Process packets coming into the system
IPtables input chain
# star -xattr -H=exustar -c -f=home.star /home/
Fully Qualified Domain Name
service vncserver restart chkconfig vncserver on

49. Query configuration files with RPM
#rpm -qac [package name]
/etc/sysconfig/network
yum provides
/etc/sysconfig/iptables

50. Where are HTML pages hosted?
$ tar czvf home.tar.gz /home
#virsh list
/var/www/html/
yum install firefox4