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. Create a symbolic link to /pub on the FTP and name it pub
#rpm -uvh [package name]
#virsh destroy domain-id
ln -s /pub /var/www/html/pub
rhn_register

2. Local host file (contains hostname). Can contain local system DNS.
IPtables forward chain
/etc/hosts
GUI menu system/administratrion/firewall
rpm --import [public key location]

3. Start the GUI for date configuration
/etc/sysconfig/resolv.conf
#rpm -ivh [package name]
system-config-date
/etc/rsyslog.conf

4. 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
tar czvf /tmp/etc.tar.gz /etc
tar fzj
tar cxtv

5. Repos for yum
rsync -PHR /home/test1.html root@server6.example.com:/var/pub
cp /home/test1.html /var/www/html/test1.html
/etc/yum.repos.d
insert as opposed to append

6. Redirect errors to std out
/etc/vsftpd/vsftpd.conf rpm -ql vsftpd
2>&1
tar xvzf /tmp/etc.tar.gz /etc
#yum groupinstall "group name"

7. See files installed with a package named vsftpd
# ls -l /usr/share/doc | grep httpd
yum install firefox4
rpm -ql vsftpd
rpm --import [public key location]

8. Install the star compression tool create an archive with the star tool.
# grep -i
yum list
#iptables -L
# star -xattr -H=exustar -c -f=home.star /home/

9. GUI File Manager
#rpm -qad [package name]
#iptables -D INPUT -p tcp --dport 21 -j accpet
nautilus
IPtables forward chain

10. List iptables
ln -s /pub /var/www/html/pub
tar czvf /tmp/etc.tar.gz /etc
#iptables -L
yum install firefox4

11. Adjust the persistent runlevel
#yum grouplist
#virsh list
# vi /etc/inittab change - id:3:initdefault:
# renice -10 proc-id

12. Search for a package with firefox in the description
/var/lib/rpm
service sshd restart
/etc/rsyslog.conf
yum search firefox

13. Extract /tmp/etc.tar.gz to /etc
ip masqu
tar xvzf /tmp/etc.tar.gz /etc
/etc/yum.repos.d
# grep -i

14. Remove a package with yum
#yum remove [package name]
system-config-date
rpm -q pkg.rpm --scripts
/etc/sysconfig/network

15. Configuration for VNC
system-config-date
$ tar xzvf home.tar.gz /home
/etc/sysconfig/vncservers rpm -ql tigervnc-server
rsync /home/test1.html root@server6.example.com:/var/pub

16. Messages related to cron log
yum search firefox
/var/log/cron
system-config-firewall (Push the enable button and check the appropriate boxes. Check.)
/etc/sysconfig/network

17. An example of searching through system logs with interpretation.
# cat /var/log/messages | grep [Ff]ailed | less
cp /home/test1.html /var/www/html/test1.html
#rpm -qad [package name]
/etc/sysconfig/iptables

18. Import a public key
#rpm -ivh [package name]
/var/log/cron
/etc/yum.repos.d
rpm --import [public key location]

19. Create a gzip-compressed backup of /etc in /tmp
service ntpd restart
rpm -q pkg.rpm --scripts
# ls -l /usr/share/doc | grep httpd
tar czvf /tmp/etc.tar.gz /etc

20. Append this to the /etc/rsyslog.conf to send mail to student@server6.example.com
/var/log/maillog
MailTo=student@server6.example.com
yum provides "*/sbin/sshd"
/etc/vsftpd/vsftpd.conf rpm -ql vsftpd

21. Generate SSH Keys
rpm -qc httpd
ssh-keygen
IPtables output chain
/usr/share/doc/initscripts-*/sysconfig.txt

22. Disk Utility Command
yum info firefox4
palimpsest
name-version-release.architecture.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

23. Kill a VM
#virsh destroy domain-id
rsync -PHR /home/test1.html root@server6.example.com:/var/pub
$ tar xzvf home.tar.gz /home
/etc/yum.repos.d/

24. Delete a rule from iptables
rpm -qp pkg.rpm
#iptables -D INPUT -p tcp --dport 21 -j accpet
rhn_register
#yum grouplist

25. Uninstall a package group with yum
/etc/hosts
#yum groupremove "group name"
yum search firefox
rpm -q pkg.rpm --scripts

26. Configuration file for system logs
/etc/sysconfig/resolv.conf
/etc/rsyslog.conf
#iptables -F
#rpm -uvh [package name]

27. Use lftp to connect
/etc/services
rsync -a /home/test1.html root@server6.example.com:/var/pub
$ tar czvf home.tar.gz /home
lftp student@server6 httpd configuration /etc/httpd/conf/httpd.conf rpm -ql httpd

28. File containing information to create rpm package - RPM packages contain these files: libraries or application - any documentation - any configuration files
rsync /home root@server6.example.com:/tmp
man search :/repository
.spec
# star -xattr -H=exustar -c -f=home.star /home/

29. Rpm upgrade package u upgrade v verbose h hash
# virsh create /etc/libvert/qemu/vm_file_name.xml
#virsh destroy domain-id
#rpm -uvh [package name]
tar xvzf /tmp/etc.tar.gz /etc

30. Restart ssh services
#yum groupremove "group name"
yum install tigervnc-server
# star -x -f=home.star
service sshd restart

31. Basic add rule for iptables not persistant unless saved with #/etc/init.d/iptables save
tar xvzf /tmp/etc.tar.gz /etc
#iptables -I INPUT -p tcp --dport 21 -j Accept
#yum
#ip addr show

32. Stores filewall rules for the system.
/etc/sysconfig/iptables
palimpsest
add/remove software GUI
/etc/sysconfig/network

33. Where are HTML pages hosted?
cp /home/test1.html /var/www/html/test1.html
/var/www/html/
vsftpd restart
*.debug /var/log/debug.log service rsyslog restart

34. Authentication related messages log
# renice -10 proc-id
#yum info [package name]
/var/log/secure
vncpasswd

35. Sync ntp time with the instructor
IPtables output chain
ntpdate -b instructor
$ grep -v ^# /etc/nsswitch.conf
#rpm -qa | grep [package name]

36. Install star
/etc/rsyslog.conf
/etc/sysconfig/resolv.conf
rpm -qc httpd
# yum

37. Stores IPtables rules (filter) chains - input forward output are persistant
rpm -qp pkg.rpm
#iptables -I INPUT -p tcp --dport 21 -j Accept
/etc/sysconfig/iptables
yum provides "*/sbin/sshd"

38. Remove a package named firefox4
logwatch
rpm -q pkg.rpm --scripts
yum remove firefox4
#yum groupinstall "group name"

39. Grep with ignoring case
# grep -i
GUI menu system/administratrion/firewall
/var/www/html/
#virsh list

40. Get a list of package groups from yum
#rpm -ivh [package name]
#yum grouplist
$ grep -v ^# /etc/nsswitch.conf
yum install firefox4

41. Install a package group with yum
rsync -a /home/test1.html root@server6.example.com:/var/pub
#iptables -I INPUT -p tcp --dport 21 -j Accept
#yum groupinstall "group name"
palimpsest

42. Edit files with cat until the _EOF is found
/etc/vsftpd/vsftpd.conf rpm -ql vsftpd
#rpm -uvh [package name]
rpm --import [public key location]
cat >> some_file << _EOF

43. Get more information on a package availale through yum
/etc/sysconfig/network
yum search firefox
#yum info [package name]
# grep -i

44. Acting as a router with forwarding
ip masqu
#virsh list
tar cxtv
#rpm -qac [package name]

45. All messages sent at info priority or higher
*.debug /var/log/debug.log service rsyslog restart
# cat /var/log/messages | grep [Ff]ailed | less
rsync -PHR /home/test1.html root@server6.example.com:/var/pub
/var/log/messages

46. Search for command in the doc directory
#rpm -uvh [package name]
# renice -10 proc-id
# ls -l /usr/share/doc | grep httpd
yum provides "*/sbin/sshd"

47. FTP package used in RHEL 6
rsync -PHR /home/test1.html root@server6.example.com:/var/pub
#yum
vsftpd
tar xvzf /tmp/etc.tar.gz /etc

48. Process packets coming into the system
yum provides "*/sbin/sshd"
IPtables input chain
rsync -PHR /home/test1.html root@server6.example.com:/var/pub
rpm -ql vsftpd

49. Documentation about sysconfig network scripts
/dev
Fully Qualified Domain Name
/etc/sysconfig/iptables
/usr/share/doc/initscripts-*/sysconfig.txt

50. RPM package naming
name-version-release.architecture.rpm
system-config-date
#rpm -uvh [package name]
#iptables -F