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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. Install a pkg.rpm locally
ln -s /pub /var/www/html/pub
/var/lib/rpm
/etc/yum.repos.d
rpm localinstall pkg.rpm --nogpgcheck

2. Sync ntp time with the instructor
ntpdate -b instructor
yum install firefox4
/etc/sysconfig/iptables
rpm -qc httpd

3. List iptables
rsync /home/test1.html root@server6.example.com:/var/pub
*.debug /var/log/debug.log service rsyslog restart
rpm -q pkg.rpm --scripts
#iptables -L

4. Get information about a package named firefox4
#virsh destroy domain-id
vsftpd restart
yum info firefox4
add/remove software GUI

5. Remove a package with yum
rsync /home root@server6.example.com:/tmp
yum provides "*/sbin/sshd"
/var/www/html/
#yum remove [package name]

6. Messages related to cron log
system-config-firewall tui
rpm -q pkg.rpm --scripts
nautilus
/var/log/cron

7. Query configuration files with RPM
cat >> some_file << _EOF
IPtables forward chain
#rpm -qac [package name]
lftp student@server6 httpd configuration /etc/httpd/conf/httpd.conf rpm -ql httpd

8. File holding services - ports - protocols assoicated
/etc/ssh/sshd_config
/etc/services
rpm -ql vsftpd
Fully Qualified Domain Name

9. Stores filewall rules for the system.
/usr/share/doc/initscripts-*/sysconfig.txt
rpm -qp pkg.rpm
#yum info [package name]
/etc/sysconfig/iptables

10. Install with RPM
#yum groupinstall "group name"
#yum
#rpm -ivh [package name]
system-config-date

11. Search for command in the doc directory
/etc/yum.repos.d
chkconfig vsftpd on
# ls -l /usr/share/doc | grep httpd
/var/log/secure

12. Display packages that match the pathname
yum provides
#yum grouplist
yum info firefox4
Fully Qualified Domain Name

13. Adjust the persistent runlevel
#rpm -uvh [package name]
#rpm -qad [package name]
# renice -10 proc-id
# vi /etc/inittab change - id:3:initdefault:

14. Install a package named firefox4
cat >> some_file << _EOF
IPtables input chain
yum install firefox4
palimpsest

15. See files installed with a package named vsftpd
yum info firefox4
rsync -PHR /home/test1.html root@server6.example.com:/var/pub
ntpdate -b instructor
rpm -ql vsftpd

16. List installed and available packages
yum list
ssh-copy-id root@server6.example.com
yum install tigervnc-server
#iptables -F

17. System config firewall
*.debug /var/log/debug.log service rsyslog restart
GUI menu system/administratrion/firewall
/var/log/cron
Fully Qualified Domain Name

18. Location of repo's
#rpm -ivh [package name]
/etc/yum.repos.d/
ntpdate -b instructor
system-config-date

19. Stores IPtables rules (filter) chains - input forward output are persistant
rpm -q pkg.rpm --scripts
/etc/sysconfig/iptables
MailTo=student@server6.example.com
ip masqu

20. Set process priority with renice - -20 highest - 20 lowest - 0 is default
[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
# star -xattr -H=exustar -c -f=home.star /home/
MailTo=student@server6.example.com
# renice -10 proc-id

21. Local file copy of /home/test1.html to /var/www/html/test1.html
cp /home/test1.html /var/www/html/test1.html
rhn_register
/etc/rsyslog.conf
#rpm -uvh [package name]

22. Shell config tool gropued like GUI firewall configurater.
chkconfig httpd on
rpm -qc httpd
/etc/sysconfig/resolv.conf
system-config-firewall tui

23. Remote copy /home/test1.html to the /var/pub directory on server6 with progress - preserving hard links - and using relative path names
#virsh list
man search :/repository
rsync -PHR /home/test1.html root@server6.example.com:/var/pub
#yum install [package name]

24. Documentation about sysconfig network scripts
/usr/share/doc/initscripts-*/sysconfig.txt
vsftpd
IPtables forward chain
rpm -q pkg.rpm --scripts

25. Process packets coming into the system
rpm --import [public key location]
[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
IPtables input chain
/dev

26. Determine which package provides SSH
yum provides "*/sbin/sshd"
service ntpd restart
2>&1
/var/log/secure

27. Install the star compression tool create an archive with the star tool.
# star -xattr -H=exustar -c -f=home.star /home/
/usr/share/doc/initscripts-*/sysconfig.txt
#rpm -qa | grep [package name]
MailTo=student@server6.example.com

28. Where are HTML pages hosted?
yum provides
#rpm -ivh [package name]
tar czvf /tmp/etc.tar.gz /etc
/var/www/html/

29. Searches for page within the #man yum
man search :/repository
insert as opposed to append
rpm -ql vsftpd
tar cxtv

30. Basic add rule for iptables not persistant unless saved with #/etc/init.d/iptables save
/etc/yum.repos.d
cp /home/test1.html /var/www/html/test1.html
#iptables -I INPUT -p tcp --dport 21 -j Accept
logwatch

31. See the configuration files installed with a package named httpd
rpm -qc httpd
yum install tigervnc-server
#rpm -qi [package name]
$ tar czvf home.tar.gz /home

32. Restart the ntpd service
service ntpd restart
yum provides "*/sbin/sshd"
.spec
/etc/yum.repos.d

33. original DNS config file - still used
.spec
#iptables -F
IPtables input chain
/etc/sysconfig/resolv.conf

34. Install the VNC server package
rpm -q pkg.rpm --scripts
yum install tigervnc-server
rsync -a /home/test1.html root@server6.example.com:/var/pub
yum update

35. Generate SSH Keys
service vncserver restart chkconfig vncserver on
# virsh create /etc/libvert/qemu/vm_file_name.xml
chkconfig httpd on
ssh-keygen

36. Flush the firewall of all rules
yum provides "*/sbin/sshd"
#iptables -F
/var/www/html/
vncviewer -via student@server6 localhost:2

37. Grep for lines that do not match (-v)
.spec
vsftpd
$ grep -v ^# /etc/nsswitch.conf
#yum info [package name]

38. GUI File Manager
rpm -qp pkg.rpm
nautilus
vsftpd
add/remove software GUI

39. Connect with VNC viewer securely
# grep -i
/etc/hosts
vncviewer -via student@server6 localhost:2
# yum

40. Create a tar ball with gzip compression of the home dir
rpm -ql vsftpd
MailTo=student@server6.example.com
$ tar czvf home.tar.gz /home
.spec

41. Remove a package named firefox4
yum remove firefox4
yum install firefox4
# virsh create /etc/libvert/qemu/vm_file_name.xml
lftp student@server6 httpd configuration /etc/httpd/conf/httpd.conf rpm -ql httpd

42. Configuration for VNC
yum list
$ grep -v ^# /etc/nsswitch.conf
/etc/sysconfig/vncservers rpm -ql tigervnc-server
/etc/sysconfig/resolv.conf

43. All messages sent at info priority or higher
palimpsest
yum install firefox4
/var/log/messages
$ tar czvf home.tar.gz /home

44. Repo config file
vncviewer -via student@server6 localhost:2
[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
*.debug /var/log/debug.log service rsyslog restart
$ grep -v ^# /etc/nsswitch.conf

45. Grep with ignoring case
# grep -i
#iptables -D INPUT -p tcp --dport 21 -j accpet
yum provides
GUI menu system/administratrion/firewall

46. Query information files with 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
yum install tigervnc-server
/usr/share/doc/initscripts-*/sysconfig.txt
#rpm -qi [package name]

47. tar options for file name - gzip - and bzip2
rsync /home/test1.html root@server6.example.com:/var/pub
yum provides
tar fzj
yum install tigervnc-server

48. Update a package
#iptables -D INPUT -p tcp --dport 21 -j accpet
#uname -r
yum update
IPtables forward chain

49. Shows network / global network variables: NETWORKING=yes HOSTNAME=shuttlehosti GATEWAY=192.168.88.1
system-config-firewall tui
vsftpd
chkconfig httpd on
/etc/sysconfig/network

50. Append add to the end of the IPtables rules. insert will put rule above the deny all rule.
/var/log/secure
insert as opposed to append
/etc/services
# renice -10 proc-id

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RHCSA Commands

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