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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. Start the GUI for date configuration
# grep -i
system-config-date
# star -x -f=home.star
/etc/vsftpd/vsftpd.conf rpm -ql vsftpd

2. tar options for create - extract - test - and verbose
tar cxtv
service vncserver restart chkconfig vncserver on
.spec
/etc/services

3. System config firewall
# vi /etc/inittab change - id:3:initdefault:
GUI menu system/administratrion/firewall
/etc/rsyslog.conf
# yum

4. FTP package used in RHEL 6
/var/www/html/
vsftpd
# star -x -f=home.star
cp /home/test1.html /var/www/html/test1.html

5. Shell config tool gropued like GUI firewall configurater.
#yum
# star -x -f=home.star
tar czvf /tmp/etc.tar.gz /etc
system-config-firewall tui

6. See the configuration files installed with a package named httpd
rpm -qc httpd
$ tar czvf home.tar.gz /home
# grep -i
vsftpd restart

7. List VMs
service vncserver restart chkconfig vncserver on
yum list
#virsh list
#yum info [package name]

8. Use lftp to connect
GUI menu system/administratrion/firewall
lftp student@server6 httpd configuration /etc/httpd/conf/httpd.conf rpm -ql httpd
IPtables input chain
#iptables -I INPUT -p tcp --dport 21 -j Accept

9. Repo config file
palimpsest
[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
rpm -q pkg.rpm --scripts
#virsh list

10. Remote file copy /home/test1.html to the /var/pub directory on server6 while preserving metadata
rsync -a /home/test1.html root@server6.example.com:/var/pub
cp /home/test1.html /var/www/html/test1.html
rsync /home/test1.html root@server6.example.com:/var/pub
chkconfig vsftpd on

11. Create a gzip-compressed backup of /etc in /tmp
# virsh create /etc/libvert/qemu/vm_file_name.xml
yum provides
tar czvf /tmp/etc.tar.gz /etc
# star -x -f=home.star

12. Shows network / global network variables: NETWORKING=yes HOSTNAME=shuttlehosti GATEWAY=192.168.88.1
/etc/sysconfig/network
cat >> some_file << _EOF
# yum
rsync /home/test1.html root@server6.example.com:/var/pub

13. Process packets being forwarded through the system
IPtables forward chain
cat >> some_file << _EOF
#yum info [package name]
nautilus

14. Package file named pkg.rpm
ln -s /pub /var/www/html/pub
tar fzj
rpm -qp pkg.rpm
man search :/repository

15. Basic add rule for iptables not persistant unless saved with #/etc/init.d/iptables save
#rpm -qac [package name]
#yum grouplist
#uname -r
#iptables -I INPUT -p tcp --dport 21 -j Accept

16. Disk Utility Command
#iptables -F
cat >> some_file << _EOF
cp /home/test1.html /var/www/html/test1.html
palimpsest

17. Acting as a router with forwarding
tar xvzf /tmp/etc.tar.gz /etc
/etc/ssh/sshd_config
name-version-release.architecture.rpm
ip masqu

18. handles dependencies while RPMs do not uses preconfigured repos
/etc/ssh/sshd_config
#yum
yum search firefox
chkconfig vsftpd on

19. Authentication related messages log
#yum groupinstall "group name"
/var/log/secure
# star -x -f=home.star
# star -xattr -H=exustar -c -f=home.star /home/

20. Search for a package with firefox in the description
/etc/sysconfig/vncservers rpm -ql tigervnc-server
#yum info [package name]
/etc/yum.repos.d
yum search firefox

21. Sync ntp time with the instructor
ssh-keygen
ntpdate -b instructor
add/remove software GUI
# star -x -f=home.star

22. Send all debug level messages to /var/log/debug.log
rsync /home/test1.html root@server6.example.com:/var/pub
*.debug /var/log/debug.log service rsyslog restart
service vncserver restart chkconfig vncserver on
#yum grouplist

23. Generate SSH Keys
rpm -qp pkg.rpm
vsftpd restart
ssh-keygen
#rpm -uvh [package name]

24. Install a package group with yum
/dev
$ tar czvf home.tar.gz /home
#yum groupinstall "group name"
# renice -10 proc-id

25. Install the VNC server package
/etc/sysconfig/iptables
insert as opposed to append
#rpm -ivh [package name]
yum install tigervnc-server

26. File holding services - ports - protocols assoicated
/etc/yum.repos.d
/etc/services
/etc/sysconfig/network
system-config-date

27. original DNS config file - still used
/etc/sysconfig/resolv.conf
#yum grouplist
#rpm -qac [package name]
/var/lib/rpm

28. Restart the ntpd service
# ls -l /usr/share/doc | grep httpd
.spec
service ntpd restart
IPtables forward chain

29. Query information files with RPM
#rpm -qi [package name]
ip masqu
chkconfig vsftpd on
/var/www/html/

30. Install star
# yum
man search :/repository
palimpsest
rpm -ql vsftpd

31. Extract /tmp/etc.tar.gz to /etc
tar xvzf /tmp/etc.tar.gz /etc
2>&1
#yum info [package name]
system-config-firewall tui

32. Install with RPM
# ls -l /usr/share/doc | grep httpd
/etc/sysconfig/vncservers rpm -ql tigervnc-server
#rpm -ivh [package name]
service sshd restart

33. Kill a VM
rsync /home/test1.html root@server6.example.com:/var/pub
#iptables -F
# star -x -f=home.star
#virsh destroy domain-id

34. Remove a package with yum
rsync /home/test1.html root@server6.example.com:/var/pub
#yum remove [package name]
yum provides "*/sbin/sshd"
/etc/services

35. Copy a public ssh key to server6
ssh-copy-id root@server6.example.com
#rpm -qac [package name]
yum install firefox4
#yum groupinstall "group name"

36. Update a package
/etc/sysconfig/vncservers rpm -ql tigervnc-server
add/remove software GUI
yum update
vncviewer -via student@server6 localhost:2

37. Configuration file for system logs
/etc/rsyslog.conf
/etc/yum.repos.d
IPtables input chain
# star -xattr -H=exustar -c -f=home.star /home/

38. Install a package with yum
#yum install [package name]
/etc/sysconfig/iptables
service ntpd restart
#uname -r

39. Append add to the end of the IPtables rules. insert will put rule above the deny all rule.
/var/www/html/
insert as opposed to append
#iptables -I INPUT -p tcp --dport 21 -j Accept
rpm -qc httpd

40. Set process priority with renice - -20 highest - 20 lowest - 0 is default
# renice -10 proc-id
#yum info [package name]
/etc/sysconfig/iptables
#virsh destroy domain-id

41. Extract a star compressed file
# cat /var/log/messages | grep [Ff]ailed | less
# star -x -f=home.star
#uname -r
/var/lib/rpm

42. Location of repo's
/dev
$ tar czvf home.tar.gz /home
/etc/sysconfig/iptables
/etc/yum.repos.d/

43. Adjust the persistent runlevel
man search :/repository
GUI menu system/administratrion/firewall
# vi /etc/inittab change - id:3:initdefault:
updating the kernel

44. Start a VM
#uname -r
#yum groupremove "group name"
# virsh create /etc/libvert/qemu/vm_file_name.xml
/etc/hosts

45. Register on the RHN
rhn_register
cat >> some_file << _EOF
/var/log/cron
# virsh create /etc/libvert/qemu/vm_file_name.xml

46. Create a symbolic link to /pub on the FTP and name it pub
rpm -qp pkg.rpm
IPtables input chain
ln -s /pub /var/www/html/pub
system-config-date

47. Gets kernel version and release number
/var/log/maillog
ssh-keygen
#uname -r
#iptables -I INPUT -p tcp --dport 21 -j Accept

48. Stores filewall rules for the system.
/etc/sysconfig/iptables
yum install firefox4
rsync -a /home/test1.html root@server6.example.com:/var/pub
# virsh create /etc/libvert/qemu/vm_file_name.xml

49. Determine which package provides SSH
/etc/ssh/sshd_config
name-version-release.architecture.rpm
IPtables output chain
yum provides "*/sbin/sshd"

50. tar options for file name - gzip - and bzip2
palimpsest
tar fzj
/etc/ssh/sshd_config
#yum

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RHCSA Commands

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