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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. Repos for yum
/etc/yum.repos.d
/etc/hosts
#iptables -D INPUT -p tcp --dport 21 -j accpet
system-config-date

2. See files installed with a package named vsftpd
rpm -ql vsftpd
yum install tigervnc-server
tar cxtv
vncpasswd

3. List scripts that can be run after installation of pkg.rpm
chkconfig vsftpd on
rpm -q pkg.rpm --scripts
yum list
/etc/hosts

4. Authentication related messages log
/var/log/secure
/etc/vsftpd/vsftpd.conf rpm -ql vsftpd
rsync -a /home/test1.html root@server6.example.com:/var/pub
cp /home/test1.html /var/www/html/test1.html

5. Register on the RHN
yum search firefox
chkconfig httpd on
rhn_register
yum update

6. Update a package
service sshd restart
# renice -10 proc-id
yum update
# star -x -f=home.star

7. Remote file copy /home/test1.html to the /var/pub directory on server6
rsync /home/test1.html root@server6.example.com:/var/pub
yum update
# star -xattr -H=exustar -c -f=home.star /home/
tar fzj

8. Create a tar ball with gzip compression of the home dir
$ tar czvf home.tar.gz /home
vncviewer -via student@server6 localhost:2
/etc/sysconfig/network
vncpasswd

9. Install a package group with yum
lftp student@server6 httpd configuration /etc/httpd/conf/httpd.conf rpm -ql httpd
#yum groupinstall "group name"
name-version-release.architecture.rpm
#rpm -qi [package name]

10. Extract a star compressed file
#iptables -F
ip masqu
# star -x -f=home.star
#yum groupremove "group name"

11. Process packets coming into the system
rsync -a /home/test1.html root@server6.example.com:/var/pub
IPtables input chain
IPtables output chain
# renice -10 proc-id

12. List installed and available packages
$ tar czvf home.tar.gz /home
yum list
/etc/sysconfig/resolv.conf
# star -xattr -H=exustar -c -f=home.star /home/

13. handles dependencies while RPMs do not uses preconfigured repos
insert as opposed to append
/etc/yum.repos.d/
#yum
chkconfig httpd on

14. Edit files with cat until the _EOF is found
/etc/sysconfig/iptables
service vncserver restart chkconfig vncserver on
cat >> some_file << _EOF
system-config-firewall (Push the enable button and check the appropriate boxes. Check.)

15. Local host file (contains hostname). Can contain local system DNS.
/etc/yum.repos.d/
*.debug /var/log/debug.log service rsyslog restart
/etc/hosts
# grep -i

16. Get information about a package named firefox4
cat >> some_file << _EOF
yum remove firefox4
system-config-firewall (Push the enable button and check the appropriate boxes. Check.)
yum info firefox4

17. Generate SSH Keys
rpm -ql vsftpd
/var/log/secure
ssh-keygen
man search :/repository

18. Stores IPtables rules (filter) chains - input forward output are persistant
vncpasswd
/etc/sysconfig/iptables
#yum grouplist
/etc/yum.repos.d/

19. Local file copy of /home/test1.html to /var/www/html/test1.html
#iptables -I INPUT -p tcp --dport 21 -j Accept
rpm -qp pkg.rpm
yum install firefox4
cp /home/test1.html /var/www/html/test1.html

20. File containing information to create rpm package - RPM packages contain these files: libraries or application - any documentation - any configuration files
$ tar czvf home.tar.gz /home
cp /home/test1.html /var/www/html/test1.html
.spec
nautilus

21. Show IP address with the IP command
#ip addr show
#yum remove [package name]
#yum groupremove "group name"
vncpasswd

22. 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
#yum grouplist
system-config-date
updating the kernel

23. Grep with ignoring case
# grep -i
#rpm -qi [package name]
cp /home/test1.html /var/www/html/test1.html
#virsh list

24. Restart the ntpd service
service ntpd restart
tar fzj
/etc/sysconfig/resolv.conf
nautilus

25. Copy a public ssh key to server6
#virsh list
man search :/repository
ssh-copy-id root@server6.example.com
system-config-firewall (Push the enable button and check the appropriate boxes. Check.)

26. Repo config file
#yum
/var/lib/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 remove [package name]

27. Shell config tool gropued like GUI firewall configurater.
system-config-firewall tui
MailTo=student@server6.example.com
#rpm -qad [package name]
system-config-firewall (Push the enable button and check the appropriate boxes. Check.)

28. Location of repo's
rpm -qp pkg.rpm
#iptables -L
/etc/yum.repos.d/
.spec

29. Restart ssh services
/etc/sysconfig/resolv.conf
/etc/hosts
# yum
service sshd restart

30. Start a VM
/var/log/maillog
ln -s /pub /var/www/html/pub
vsftpd restart
# virsh create /etc/libvert/qemu/vm_file_name.xml

31. tar options for file name - gzip - and bzip2
$ grep -v ^# /etc/nsswitch.conf
tar fzj
ln -s /pub /var/www/html/pub
rpm -q pkg.rpm --scripts

32. Kill a VM
yum remove firefox4
yum provides
#virsh destroy domain-id
# yum

33. Query information files with RPM
/var/www/html/
#yum grouplist
vsftpd restart
#rpm -qi [package name]

34. Disks available for partitions
IPtables output chain
yum update
ntpdate -b instructor
/dev

35. Persist FTP on boot
nautilus
# vi /etc/inittab change - id:3:initdefault:
yum provides "*/sbin/sshd"
chkconfig vsftpd on

36. Search for a package with firefox in the description
yum search firefox
ssh-keygen
# renice -10 proc-id
/etc/vsftpd/vsftpd.conf rpm -ql vsftpd

37. Extract /tmp/etc.tar.gz to /etc
/etc/hosts
2>&1
tar xvzf /tmp/etc.tar.gz /etc
.spec

38. Uninstall a package group with yum
/var/log/secure
#rpm -uvh [package name]
/etc/sysconfig/iptables
#yum groupremove "group name"

39. Search for a package within all packages
vsftpd restart
#rpm -qa | grep [package name]
/etc/sysconfig/resolv.conf
# star -xattr -H=exustar -c -f=home.star /home/

40. Set process priority with renice - -20 highest - 20 lowest - 0 is default
#rpm -qa | grep [package name]
# cat /var/log/messages | grep [Ff]ailed | less
# renice -10 proc-id
yum info firefox4

41. Messages related to cron log
/var/log/cron
ip masqu
rpm -qp pkg.rpm
vsftpd

42. fqdn
system-config-firewall (Push the enable button and check the appropriate boxes. Check.)
Fully Qualified Domain Name
chkconfig httpd on
/etc/ssh/sshd_config

43. Send all debug level messages to /var/log/debug.log
IPtables input chain
*.debug /var/log/debug.log service rsyslog restart
IPtables output chain
# ls -l /usr/share/doc | grep httpd

44. List VMs
#virsh list
service sshd restart
/etc/sysconfig/resolv.conf
# star -x -f=home.star

45. List iptables
/var/log/messages
#yum grouplist
#iptables -L
add/remove software GUI

46. Import a public key
service ntpd restart
yum list
rpm --import [public key location]
#rpm -qad [package name]

47. Stores filewall rules for the system.
#virsh destroy domain-id
/etc/sysconfig/iptables
/var/www/html/
yum remove firefox4

48. Program to analyze standard log files and send a summary email to root
# ls -l /usr/share/doc | grep httpd
logwatch
.spec
service sshd restart

49. Start vsftp service
#rpm -qad [package name]
/etc/sysconfig/network
/var/lib/rpm
vsftpd restart

50. Backup a home directory on desktop6 to /tmp on server6
system-config-date
#yum remove [package name]
rsync /home root@server6.example.com:/tmp
vncviewer -via student@server6 localhost:2

Can you answer 50 questions in 15 minutes?

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RHCSA Commands

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