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RHCSA Commands

Subjects : certifications, it-skills, rhcsa

Instructions:

Answer 50 questions in 15 minutes.
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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. FTP package used in RHEL 6
# star -x -f=home.star
system-config-firewall tui
/var/log/secure
vsftpd

2. Should be done with yum and install as opposed to update if done with RPM option "i" should be used and not "u"
ln -s /pub /var/www/html/pub
updating the kernel
tar fzj
tar czvf /tmp/etc.tar.gz /etc

3. Delete a rule from iptables
#iptables -L
#iptables -D INPUT -p tcp --dport 21 -j accpet
rsync /home/test1.html root@server6.example.com:/var/pub
ssh-keygen

4. Install the star compression tool create an archive with the star tool.
# star -xattr -H=exustar -c -f=home.star /home/
/etc/sysconfig/vncservers rpm -ql tigervnc-server
$ tar xzvf home.tar.gz /home
man search :/repository

5. Restart vnc and persist on boot
#uname -r
service vncserver restart chkconfig vncserver on
yum provides "*/sbin/sshd"
system-config-firewall tui

6. Enable anonymous users - disable local accounts - and disable any uploads to the FTP server
#rpm -qac [package name]
rpm -ql vsftpd
/etc/vsftpd/vsftpd.conf rpm -ql vsftpd
chkconfig httpd on

7. Process packets coming out of the system
vsftpd
# cat /var/log/messages | grep [Ff]ailed | less
ssh-copy-id root@server6.example.com
IPtables output chain

8. Determine which package provides SSH
cat >> some_file << _EOF
# star -x -f=home.star
yum provides "*/sbin/sshd"
# virsh create /etc/libvert/qemu/vm_file_name.xml

9. Extract a gzipped tar ball in your home directory
rsync /home root@server6.example.com:/tmp
rpm -q pkg.rpm --scripts
#iptables -L
$ tar xzvf home.tar.gz /home

10. Connect with VNC viewer securely
#iptables -L
vncviewer -via student@server6 localhost:2
rsync -PHR /home/test1.html root@server6.example.com:/var/pub
vsftpd restart

11. tar options for file name - gzip - and bzip2
tar fzj
rpm -ql vsftpd
#rpm -qad [package name]
rpm -q pkg.rpm --scripts

12. Query information files with RPM
rsync -PHR /home/test1.html root@server6.example.com:/var/pub
#rpm -qi [package name]
/etc/sysconfig/iptables
#rpm -ivh [package name]

13. Package file named pkg.rpm
chkconfig httpd on
yum install firefox4
rpm -qp pkg.rpm
rpm localinstall pkg.rpm --nogpgcheck

14. Remote file copy /home/test1.html to the /var/pub directory on server6
/etc/sysconfig/vncservers rpm -ql tigervnc-server
rsync /home/test1.html root@server6.example.com:/var/pub
MailTo=student@server6.example.com
2>&1

15. Get information about a package named firefox4
/var/lib/rpm
tar xvzf /tmp/etc.tar.gz /etc
yum info firefox4
/etc/sysconfig/vncservers rpm -ql tigervnc-server

16. Install a package group with yum
tar czvf /tmp/etc.tar.gz /etc
#yum groupinstall "group name"
/etc/hosts
yum list

17. Show IP address with the IP command
/var/log/messages
$ tar czvf home.tar.gz /home
Fully Qualified Domain Name
#ip addr show

18. File holding services - ports - protocols assoicated
ln -s /pub /var/www/html/pub
/etc/yum.repos.d
system-config-date
/etc/services

19. fqdn
rpm -qc httpd
Fully Qualified Domain Name
#virsh destroy domain-id
rpm -ql vsftpd

20. Repos for yum
/etc/yum.repos.d
/var/www/html/
/etc/yum.repos.d/
ssh-copy-id root@server6.example.com

21. Search for command in the doc directory
/etc/yum.repos.d/
/var/log/maillog
tar cxtv
# ls -l /usr/share/doc | grep httpd

22. Process packets being forwarded through the system
/etc/sysconfig/iptables
rpm -qc httpd
MailTo=student@server6.example.com
IPtables forward chain

23. RPM package naming
name-version-release.architecture.rpm
#yum install [package name]
/var/log/messages
yum list

24. Restart the ntpd service
chkconfig vsftpd on
MailTo=student@server6.example.com
rsync /home/test1.html root@server6.example.com:/var/pub
service ntpd restart

25. Local host file (contains hostname). Can contain local system DNS.
rpm -q pkg.rpm --scripts
vncpasswd
updating the kernel
/etc/hosts

26. Set process priority with renice - -20 highest - 20 lowest - 0 is default
/etc/yum.repos.d
yum info firefox4
# renice -10 proc-id
yum provides "*/sbin/sshd"

27. Basic add rule for iptables not persistant unless saved with #/etc/init.d/iptables save
#iptables -I INPUT -p tcp --dport 21 -j Accept
system-config-date
#rpm -uvh [package name]
# vi /etc/inittab change - id:3:initdefault:

28. GUI File Manager
nautilus
MailTo=student@server6.example.com
ln -s /pub /var/www/html/pub
/usr/share/doc/initscripts-*/sysconfig.txt

29. Query all documentation with RPM
#rpm -qad [package name]
/etc/yum.repos.d/
/usr/share/doc/initscripts-*/sysconfig.txt
yum info firefox4

30. Remote file copy /home/test1.html to the /var/pub directory on server6 while preserving metadata
# vi /etc/inittab change - id:3:initdefault:
#rpm -qa | grep [package name]
rsync -a /home/test1.html root@server6.example.com:/var/pub
name-version-release.architecture.rpm

31. Install a pkg.rpm locally
chkconfig httpd on
/etc/sysconfig/iptables
rpm localinstall pkg.rpm --nogpgcheck
rpm -q pkg.rpm --scripts

32. Send all debug level messages to /var/log/debug.log
*.debug /var/log/debug.log service rsyslog restart
ssh-keygen
$ tar czvf home.tar.gz /home
/usr/share/doc/initscripts-*/sysconfig.txt

33. List installed and available packages
rpm -qc httpd
# virsh create /etc/libvert/qemu/vm_file_name.xml
/var/log/secure
yum list

34. Append add to the end of the IPtables rules. insert will put rule above the deny all rule.
/etc/rsyslog.conf
yum provides "*/sbin/sshd"
rpm -qp pkg.rpm
insert as opposed to append

35. Remove a package named firefox4
#rpm -ivh [package name]
# star -x -f=home.star
logwatch
yum remove firefox4

36. Email related messages log
/etc/yum.repos.d
# yum
/var/log/maillog
IPtables forward chain

37. Remove a package with yum
#yum remove [package name]
/etc/vsftpd/vsftpd.conf rpm -ql vsftpd
add/remove software GUI
yum provides "*/sbin/sshd"

38. Grep for lines that do not match (-v)
#rpm -qac [package name]
tar cxtv
$ grep -v ^# /etc/nsswitch.conf
updating the kernel

39. List VMs
#virsh list
rpm -ql vsftpd
ln -s /pub /var/www/html/pub
service ntpd restart

40. Install a package named firefox4
yum install firefox4
#rpm -qa | grep [package name]
/var/www/html/
rpm -qc httpd

41. GUI install / uninstall with yum
add/remove software GUI
#yum groupremove "group name"
lftp student@server6 httpd configuration /etc/httpd/conf/httpd.conf rpm -ql httpd
$ tar czvf home.tar.gz /home

42. Query configuration files with RPM
#rpm -qac [package name]
#iptables -F
updating the kernel
/etc/ssh/sshd_config

43. Start the GUI for date configuration
/etc/hosts
#iptables -L
system-config-date
#ip addr show

44. Create a symbolic link to /pub on the FTP and name it pub
ip masqu
system-config-date
# yum
ln -s /pub /var/www/html/pub

45. Search for a package with firefox in the description
Fully Qualified Domain Name
rpm -ql vsftpd
rpm localinstall pkg.rpm --nogpgcheck
yum search firefox

46. Start GUI for Firewall
IPtables forward chain
/etc/sysconfig/iptables
/etc/vsftpd/vsftpd.conf rpm -ql vsftpd
system-config-firewall (Push the enable button and check the appropriate boxes. Check.)

47. Append this to the /etc/rsyslog.conf to send mail to student@server6.example.com
man search :/repository
#yum groupinstall "group name"
MailTo=student@server6.example.com
system-config-firewall tui

48. Generate SSH Keys
updating the kernel
ssh-keygen
lftp student@server6 httpd configuration /etc/httpd/conf/httpd.conf rpm -ql httpd
service vncserver restart chkconfig vncserver on

49. Gets kernel version and release number
#uname -r
chkconfig vsftpd on
system-config-firewall tui
#ip addr show

50. Set a VNC password
#iptables -I INPUT -p tcp --dport 21 -j Accept
vncpasswd
ln -s /pub /var/www/html/pub
yum provides

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Can you answer 50 questions in 15 minutes?

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RHCSA Commands

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