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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. Disk Utility Command
tar cxtv
cp /home/test1.html /var/www/html/test1.html
palimpsest
service vncserver restart chkconfig vncserver on

2. Install a pkg.rpm locally
rpm localinstall pkg.rpm --nogpgcheck
MailTo=student@server6.example.com
# vi /etc/inittab change - id:3:initdefault:
chkconfig httpd on

3. Remote file copy /home/test1.html to the /var/pub directory on server6 while preserving metadata
/etc/rsyslog.conf
/etc/sysconfig/iptables
rsync /home/test1.html root@server6.example.com:/var/pub
rsync -a /home/test1.html root@server6.example.com:/var/pub

4. tar options for file name - gzip - and bzip2
tar fzj
tar czvf /tmp/etc.tar.gz /etc
vncpasswd
system-config-firewall (Push the enable button and check the appropriate boxes. Check.)

5. Search for a package within all packages
#rpm -qac [package name]
$ tar xzvf home.tar.gz /home
#rpm -qa | grep [package name]
vsftpd restart

6. Append add to the end of the IPtables rules. insert will put rule above the deny all rule.
insert as opposed to append
tar czvf /tmp/etc.tar.gz /etc
/etc/rsyslog.conf
rsync -PHR /home/test1.html root@server6.example.com:/var/pub

7. Start the GUI for date configuration
# ls -l /usr/share/doc | grep httpd
system-config-date
rsync /home/test1.html root@server6.example.com:/var/pub
yum list

8. Shell config tool gropued like GUI firewall configurater.
name-version-release.architecture.rpm
tar cxtv
#rpm -ivh [package name]
system-config-firewall tui

9. Disks available for partitions
/dev
#iptables -F
vsftpd restart
ssh-copy-id root@server6.example.com

10. Search for command in the doc directory
# grep -i
/var/log/maillog
# ls -l /usr/share/doc | grep httpd
service sshd restart

11. Install a package with yum
ip masqu
name-version-release.architecture.rpm
/etc/vsftpd/vsftpd.conf rpm -ql vsftpd
#yum install [package name]

12. Show IP address with the IP command
/var/log/secure
system-config-date
#ip addr show
#yum remove [package name]

13. Should be done with yum and install as opposed to update if done with RPM option "i" should be used and not "u"
# vi /etc/inittab change - id:3:initdefault:
updating the kernel
#iptables -D INPUT -p tcp --dport 21 -j accpet
# yum

14. Query all documentation with RPM
yum provides
#rpm -qad [package name]
rpm -q pkg.rpm --scripts
vncpasswd

15. Email related messages log
/etc/vsftpd/vsftpd.conf rpm -ql vsftpd
/var/log/maillog
/etc/sysconfig/resolv.conf
#virsh destroy domain-id

16. Install with RPM
rhn_register
cat >> some_file << _EOF
#rpm -ivh [package name]
#rpm -uvh [package name]

17. Local host file (contains hostname). Can contain local system DNS.
tar cxtv
/etc/rsyslog.conf
/etc/hosts
/dev

18. Restart vnc and persist on boot
/var/log/messages
#virsh destroy domain-id
yum install firefox4
service vncserver restart chkconfig vncserver on

19. File holding services - ports - protocols assoicated
/etc/sysconfig/network
.spec
/etc/services
#yum groupinstall "group name"

20. Gets kernel version and release number
ssh-copy-id root@server6.example.com
2>&1
#uname -r
# renice -10 proc-id

21. Update a package
/etc/sysconfig/iptables
rpm --import [public key location]
system-config-firewall tui
yum update

22. Display packages that match the pathname
yum provides
tar czvf /tmp/etc.tar.gz /etc
#rpm -uvh [package name]
yum search firefox

23. See the configuration files installed with a package named httpd
yum info firefox4
# grep -i
rpm -qc httpd
# virsh create /etc/libvert/qemu/vm_file_name.xml

24. Send all debug level messages to /var/log/debug.log
GUI menu system/administratrion/firewall
*.debug /var/log/debug.log service rsyslog restart
#ip addr show
yum install firefox4

25. Start GUI for Firewall
# grep -i
#uname -r
system-config-firewall (Push the enable button and check the appropriate boxes. Check.)
#yum groupinstall "group name"

26. Grep for lines that do not match (-v)
$ grep -v ^# /etc/nsswitch.conf
#rpm -qac [package name]
/var/www/html/
nautilus

27. Remove a package named firefox4
yum remove firefox4
tar czvf /tmp/etc.tar.gz /etc
yum install tigervnc-server
yum list

28. Install star
vncviewer -via student@server6 localhost:2
/etc/sysconfig/vncservers rpm -ql tigervnc-server
rpm localinstall pkg.rpm --nogpgcheck
# yum

29. GUI install / uninstall with yum
#yum groupinstall "group name"
add/remove software GUI
ip masqu
tar czvf /tmp/etc.tar.gz /etc

30. Register on the RHN
rhn_register
ssh-copy-id root@server6.example.com
name-version-release.architecture.rpm
# vi /etc/inittab change - id:3:initdefault:

31. Adjust the persistent runlevel
#virsh destroy domain-id
#rpm -qa | grep [package name]
yum remove firefox4
# vi /etc/inittab change - id:3:initdefault:

32. Primary configuration of ssh
rsync /home root@server6.example.com:/tmp
.spec
/etc/ssh/sshd_config
#yum install [package name]

33. original DNS config file - still used
service sshd restart
/etc/sysconfig/resolv.conf
/etc/yum.repos.d/
rpm --import [public key location]

34. Configuration file for system logs
rsync -PHR /home/test1.html root@server6.example.com:/var/pub
/etc/rsyslog.conf
logwatch
#yum install [package name]

35. GUI File Manager
vsftpd
nautilus
#virsh destroy domain-id
#yum remove [package name]

36. All messages sent at info priority or higher
/usr/share/doc/initscripts-*/sysconfig.txt
rpm -qp pkg.rpm
/var/log/messages
system-config-firewall (Push the enable button and check the appropriate boxes. Check.)

37. Append this to the /etc/rsyslog.conf to send mail to student@server6.example.com
*.debug /var/log/debug.log service rsyslog restart
MailTo=student@server6.example.com
ip masqu
/var/lib/rpm

38. Create a tar ball with gzip compression of the home dir
$ tar czvf home.tar.gz /home
#iptables -D INPUT -p tcp --dport 21 -j accpet
rpm -q pkg.rpm --scripts
service ntpd restart

39. Flush the firewall of all rules
#yum grouplist
#iptables -F
yum info firefox4
service sshd restart

40. handles dependencies while RPMs do not uses preconfigured repos
#yum
/etc/rsyslog.conf
rsync /home/test1.html root@server6.example.com:/var/pub
MailTo=student@server6.example.com

41. List installed and available packages
yum list
# virsh create /etc/libvert/qemu/vm_file_name.xml
$ tar czvf home.tar.gz /home
#iptables -D INPUT -p tcp --dport 21 -j accpet

42. Local file copy of /home/test1.html to /var/www/html/test1.html
/etc/vsftpd/vsftpd.conf rpm -ql vsftpd
rpm -qc httpd
cp /home/test1.html /var/www/html/test1.html
GUI menu system/administratrion/firewall

43. See files installed with a package named vsftpd
ssh-keygen
tar cxtv
rpm -ql vsftpd
yum install tigervnc-server

44. Create a symbolic link to /pub on the FTP and name it pub
#iptables -D INPUT -p tcp --dport 21 -j accpet
ln -s /pub /var/www/html/pub
vncviewer -via student@server6 localhost:2
nautilus

45. Basic add rule for iptables not persistant unless saved with #/etc/init.d/iptables save
#iptables -I INPUT -p tcp --dport 21 -j Accept
#iptables -D INPUT -p tcp --dport 21 -j accpet
# yum
$ tar xzvf home.tar.gz /home

46. Configuration for VNC
system-config-date
/etc/sysconfig/vncservers rpm -ql tigervnc-server
updating the kernel
rpm -qp pkg.rpm

47. Generate SSH Keys
ssh-keygen
[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
/var/log/maillog
/etc/services

48. Repo config file
system-config-firewall (Push the enable button and check the appropriate boxes. Check.)
Fully Qualified Domain Name
rsync -PHR /home/test1.html root@server6.example.com:/var/pub
[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

49. Extract a star compressed file
#rpm -qi [package name]
# star -x -f=home.star
tar xvzf /tmp/etc.tar.gz /etc
system-config-firewall (Push the enable button and check the appropriate boxes. Check.)

50. Contains RPM database
/etc/yum.repos.d/
/var/lib/rpm
/var/log/secure
yum info firefox4