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. List installed and available packages
system-config-firewall tui
# vi /etc/inittab change - id:3:initdefault:
yum update
yum list

2. Basic add rule for iptables not persistant unless saved with #/etc/init.d/iptables save
#rpm -uvh [package name]
MailTo=student@server6.example.com
rsync -PHR /home/test1.html root@server6.example.com:/var/pub
#iptables -I INPUT -p tcp --dport 21 -j Accept

3. Persist FTP on boot
/etc/vsftpd/vsftpd.conf rpm -ql vsftpd
GUI menu system/administratrion/firewall
#rpm -qad [package name]
chkconfig vsftpd on

4. List VMs
#virsh list
ssh-copy-id root@server6.example.com
name-version-release.architecture.rpm
# cat /var/log/messages | grep [Ff]ailed | less

5. Install the star compression tool create an archive with the star tool.
updating the kernel
# star -xattr -H=exustar -c -f=home.star /home/
#virsh destroy domain-id
chkconfig httpd on

6. Local file copy of /home/test1.html to /var/www/html/test1.html
.spec
/etc/hosts
MailTo=student@server6.example.com
cp /home/test1.html /var/www/html/test1.html

7. Documentation about sysconfig network scripts
rpm -ql vsftpd
#rpm -qad [package name]
/usr/share/doc/initscripts-*/sysconfig.txt
/dev

8. Redirect errors to std out
ln -s /pub /var/www/html/pub
#iptables -I INPUT -p tcp --dport 21 -j Accept
ip masqu
2>&1

9. Repos for yum
/etc/yum.repos.d
add/remove software GUI
rsync /home root@server6.example.com:/tmp
ip masqu

10. Email related messages log
tar czvf /tmp/etc.tar.gz /etc
/var/log/maillog
add/remove software GUI
# star -x -f=home.star

11. All messages sent at info priority or higher
rsync /home/test1.html root@server6.example.com:/var/pub
/var/log/messages
updating the kernel
#yum grouplist

12. tar options for create - extract - test - and verbose
/var/www/html/
#ip addr show
tar cxtv
#virsh destroy domain-id

13. Display packages that match the pathname
yum provides
rpm --import [public key location]
/var/lib/rpm
$ tar czvf home.tar.gz /home

14. Repo config file
rsync -PHR /home/test1.html root@server6.example.com:/var/pub
#yum remove [package name]
[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 tui

15. Install a pkg.rpm locally
IPtables output chain
rpm localinstall pkg.rpm --nogpgcheck
*.debug /var/log/debug.log service rsyslog restart
add/remove software GUI

16. See files installed with a package named vsftpd
ln -s /pub /var/www/html/pub
#virsh destroy domain-id
rpm -ql vsftpd
#iptables -L

17. Create a tar ball with gzip compression of the home dir
IPtables output chain
$ tar czvf home.tar.gz /home
chkconfig vsftpd on
updating the kernel

18. Update a package
yum update
yum install firefox4
yum provides
updating the kernel

19. Program to analyze standard log files and send a summary email to root
rsync /home/test1.html root@server6.example.com:/var/pub
logwatch
MailTo=student@server6.example.com
#yum groupremove "group name"

20. Create a symbolic link to /pub on the FTP and name it pub
# ls -l /usr/share/doc | grep httpd
man search :/repository
ln -s /pub /var/www/html/pub
#iptables -I INPUT -p tcp --dport 21 -j Accept

21. List scripts that can be run after installation of pkg.rpm
rpm -q pkg.rpm --scripts
#uname -r
vncpasswd
ip masqu

22. Get more information on a package availale through yum
/etc/hosts
rsync -a /home/test1.html root@server6.example.com:/var/pub
#yum info [package name]
*.debug /var/log/debug.log service rsyslog restart

23. Location of repo's
/var/log/cron
/etc/yum.repos.d/
rsync -PHR /home/test1.html root@server6.example.com:/var/pub
nautilus

24. Query information files with RPM
#rpm -qi [package name]
/etc/sysconfig/vncservers rpm -ql tigervnc-server
vsftpd
rpm -ql vsftpd

25. Extract a star compressed file
$ grep -v ^# /etc/nsswitch.conf
yum update
# star -x -f=home.star
vsftpd

26. Kill a VM
#virsh destroy domain-id
system-config-firewall (Push the enable button and check the appropriate boxes. Check.)
/etc/vsftpd/vsftpd.conf rpm -ql vsftpd
vncpasswd

27. Package file named pkg.rpm
*.debug /var/log/debug.log service rsyslog restart
rpm -qp pkg.rpm
/usr/share/doc/initscripts-*/sysconfig.txt
service ntpd restart

28. Set a VNC password
vncpasswd
vsftpd restart
.spec
/etc/ssh/sshd_config

29. Copy a public ssh key to server6
ssh-copy-id root@server6.example.com
service vncserver restart chkconfig vncserver on
/etc/vsftpd/vsftpd.conf rpm -ql vsftpd
GUI menu system/administratrion/firewall

30. Get information about a package named firefox4
yum info firefox4
rsync -a /home/test1.html root@server6.example.com:/var/pub
man search :/repository
ln -s /pub /var/www/html/pub

31. FTP package used in RHEL 6
#yum info [package name]
# yum
add/remove software GUI
vsftpd

32. Append this to the /etc/rsyslog.conf to send mail to student@server6.example.com
cp /home/test1.html /var/www/html/test1.html
ln -s /pub /var/www/html/pub
#ip addr show
MailTo=student@server6.example.com

33. Delete a rule from iptables
.spec
insert as opposed to append
#iptables -D INPUT -p tcp --dport 21 -j accpet
service ntpd restart

34. File containing information to create rpm package - RPM packages contain these files: libraries or application - any documentation - any configuration files
nautilus
/etc/hosts
/etc/vsftpd/vsftpd.conf rpm -ql vsftpd
.spec

35. Create a gzip-compressed backup of /etc in /tmp
tar czvf /tmp/etc.tar.gz /etc
# star -xattr -H=exustar -c -f=home.star /home/
rpm localinstall pkg.rpm --nogpgcheck
insert as opposed to append

36. original DNS config file - still used
/etc/vsftpd/vsftpd.conf rpm -ql vsftpd
tar xvzf /tmp/etc.tar.gz /etc
/etc/sysconfig/resolv.conf
#rpm -qac [package name]

37. Extract /tmp/etc.tar.gz to /etc
# ls -l /usr/share/doc | grep httpd
tar xvzf /tmp/etc.tar.gz /etc
yum install firefox4
# yum

38. System config firewall
GUI menu system/administratrion/firewall
chkconfig vsftpd on
yum update
/etc/ssh/sshd_config

39. See the configuration files installed with a package named httpd
rpm -qc httpd
/etc/sysconfig/network
#virsh list
#rpm -uvh [package name]

40. Process packets being forwarded through the system
GUI menu system/administratrion/firewall
IPtables forward chain
rsync -a /home/test1.html root@server6.example.com:/var/pub
#yum groupremove "group name"

41. Query all documentation with RPM
# grep -i
2>&1
#rpm -qad [package name]
ssh-copy-id root@server6.example.com

42. Edit files with cat until the _EOF is found
# star -x -f=home.star
cat >> some_file << _EOF
palimpsest
/etc/sysconfig/iptables

43. Where are HTML pages hosted?
Fully Qualified Domain Name
/etc/sysconfig/iptables
system-config-firewall tui
/var/www/html/

44. Gets kernel version and release number
#uname -r
yum provides "*/sbin/sshd"
ln -s /pub /var/www/html/pub
#virsh destroy domain-id

45. Acting as a router with forwarding
IPtables input chain
ip masqu
# grep -i
service vncserver restart chkconfig vncserver on

46. Use lftp to connect
lftp student@server6 httpd configuration /etc/httpd/conf/httpd.conf rpm -ql httpd
#yum grouplist
ip masqu
#virsh destroy domain-id

47. Shows network / global network variables: NETWORKING=yes HOSTNAME=shuttlehosti GATEWAY=192.168.88.1
/etc/sysconfig/network
rsync -a /home/test1.html root@server6.example.com:/var/pub
yum install firefox4
/etc/sysconfig/resolv.conf

48. Show IP address with the IP command
#iptables -L
# star -xattr -H=exustar -c -f=home.star /home/
service ntpd restart
#ip addr show

49. Install a package group with yum
#rpm -qi [package name]
rsync /home/test1.html root@server6.example.com:/var/pub
#yum groupinstall "group name"
vncpasswd

50. Shell config tool gropued like GUI firewall configurater.
system-config-firewall tui
/etc/sysconfig/iptables
# vi /etc/inittab change - id:3:initdefault:
IPtables forward chain