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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. Install a package group with yum
yum install tigervnc-server
#virsh destroy domain-id
ssh-copy-id root@server6.example.com
#yum groupinstall "group name"

2. Extract /tmp/etc.tar.gz to /etc
tar xvzf /tmp/etc.tar.gz /etc
tar cxtv
#rpm -qa | grep [package name]
vsftpd

3. See files installed with a package named vsftpd
rpm -ql vsftpd
rsync /home/test1.html root@server6.example.com:/var/pub
ssh-keygen
logwatch

4. Remote file copy /home/test1.html to the /var/pub directory on server6
/var/log/cron
# star -xattr -H=exustar -c -f=home.star /home/
#rpm -qi [package name]
rsync /home/test1.html root@server6.example.com:/var/pub

5. Messages related to cron log
# star -xattr -H=exustar -c -f=home.star /home/
add/remove software GUI
/var/log/cron
IPtables input chain

6. Configuration for VNC
rhn_register
#iptables -I INPUT -p tcp --dport 21 -j Accept
/var/log/secure
/etc/sysconfig/vncservers rpm -ql tigervnc-server

7. Location of repo's
vncviewer -via student@server6 localhost:2
/etc/yum.repos.d/
system-config-firewall (Push the enable button and check the appropriate boxes. Check.)
cat >> some_file << _EOF

8. Start the GUI for date configuration
GUI menu system/administratrion/firewall
rpm -qc httpd
system-config-date
# renice -10 proc-id

9. Start GUI for Firewall
add/remove software GUI
vsftpd
/etc/hosts
system-config-firewall (Push the enable button and check the appropriate boxes. Check.)

10. Repo config file
yum list
tar cxtv
[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

11. 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 info firefox4
#yum groupinstall "group name"
/usr/share/doc/initscripts-*/sysconfig.txt

12. Query all documentation with RPM
# virsh create /etc/libvert/qemu/vm_file_name.xml
#rpm -qad [package name]
2>&1
system-config-firewall (Push the enable button and check the appropriate boxes. Check.)

13. Stores IPtables rules (filter) chains - input forward output are persistant
/etc/vsftpd/vsftpd.conf rpm -ql vsftpd
/etc/sysconfig/iptables
/var/www/html/
$ tar czvf home.tar.gz /home

14. Search for a package with firefox in the description
yum search firefox
cat >> some_file << _EOF
vncpasswd
yum install tigervnc-server

15. Grep for lines that do not match (-v)
#yum install [package name]
$ tar xzvf home.tar.gz /home
$ grep -v ^# /etc/nsswitch.conf
tar xvzf /tmp/etc.tar.gz /etc

16. Program to analyze standard log files and send a summary email to root
# ls -l /usr/share/doc | grep httpd
#iptables -I INPUT -p tcp --dport 21 -j Accept
$ tar xzvf home.tar.gz /home
logwatch

17. Should be done with yum and install as opposed to update if done with RPM option "i" should be used and not "u"
updating the kernel
# virsh create /etc/libvert/qemu/vm_file_name.xml
rpm localinstall pkg.rpm --nogpgcheck
# star -x -f=home.star

18. Set a VNC password
logwatch
#rpm -qa | grep [package name]
#yum groupinstall "group name"
vncpasswd

19. Restart the ntpd service
chkconfig httpd on
/etc/ssh/sshd_config
[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
service ntpd restart

20. handles dependencies while RPMs do not uses preconfigured repos
2>&1
# ls -l /usr/share/doc | grep httpd
#yum
#iptables -D INPUT -p tcp --dport 21 -j accpet

21. List iptables
system-config-date
#iptables -L
[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
2>&1

22. File containing information to create rpm package - RPM packages contain these files: libraries or application - any documentation - any configuration files
.spec
yum install firefox4
#rpm -qi [package name]
#iptables -D INPUT -p tcp --dport 21 -j accpet

23. Email related messages log
/var/log/maillog
IPtables input chain
/etc/yum.repos.d
#rpm -uvh [package name]

24. Remove a package with yum
/var/www/html/
#yum remove [package name]
#rpm -qa | grep [package name]
/etc/yum.repos.d/

25. Stores filewall rules for the system.
#ip addr show
service vncserver restart chkconfig vncserver on
/etc/sysconfig/iptables
tar cxtv

26. Backup a home directory on desktop6 to /tmp on server6
ssh-keygen
rsync /home root@server6.example.com:/tmp
#virsh destroy domain-id
# vi /etc/inittab change - id:3:initdefault:

27. Shell config tool gropued like GUI firewall configurater.
#rpm -qi [package name]
palimpsest
system-config-date
system-config-firewall tui

28. Extract a star compressed file
# grep -i
ln -s /pub /var/www/html/pub
# star -x -f=home.star
IPtables input chain

29. Start a VM
#virsh destroy domain-id
# virsh create /etc/libvert/qemu/vm_file_name.xml
#ip addr show
#rpm -qad [package name]

30. Repos for yum
/etc/yum.repos.d
vsftpd restart
name-version-release.architecture.rpm
#rpm -uvh [package name]

31. Remote file copy /home/test1.html to the /var/pub directory on server6 while preserving metadata
/var/log/messages
rsync -a /home/test1.html root@server6.example.com:/var/pub
ln -s /pub /var/www/html/pub
/usr/share/doc/initscripts-*/sysconfig.txt

32. Register on the RHN
rhn_register
#yum grouplist
rpm --import [public key location]
ip masqu

33. Start vsftp service
$ grep -v ^# /etc/nsswitch.conf
insert as opposed to append
# virsh create /etc/libvert/qemu/vm_file_name.xml
vsftpd restart

34. Authentication related messages log
rpm --import [public key location]
/var/log/secure
#iptables -F
rpm -q pkg.rpm --scripts

35. Remove a package named firefox4
yum remove firefox4
#yum
rsync /home/test1.html root@server6.example.com:/var/pub
yum info firefox4

36. Restart ssh services
service sshd restart
/etc/sysconfig/network
#iptables -D INPUT -p tcp --dport 21 -j accpet
palimpsest

37. Edit files with cat until the _EOF is found
/dev
ssh-copy-id root@server6.example.com
cat >> some_file << _EOF
#rpm -qa | grep [package name]

38. Disk Utility Command
palimpsest
# ls -l /usr/share/doc | grep httpd
/dev
tar czvf /tmp/etc.tar.gz /etc

39. FTP package used in RHEL 6
tar czvf /tmp/etc.tar.gz /etc
vsftpd
# star -x -f=home.star
cp /home/test1.html /var/www/html/test1.html

40. List scripts that can be run after installation of pkg.rpm
# star -x -f=home.star
rpm -q pkg.rpm --scripts
$ tar xzvf home.tar.gz /home
GUI menu system/administratrion/firewall

41. Search for a package within all packages
#rpm -qa | grep [package name]
rsync -PHR /home/test1.html root@server6.example.com:/var/pub
man search :/repository
#iptables -L

42. Contains RPM database
/var/log/maillog
ln -s /pub /var/www/html/pub
yum remove firefox4
/var/lib/rpm

43. Query configuration files with RPM
#rpm -qac [package name]
ssh-keygen
#yum remove [package name]
chkconfig vsftpd on

44. Create a symbolic link to /pub on the FTP and name it pub
rpm -qc httpd
ln -s /pub /var/www/html/pub
#ip addr show
yum update

45. Persist FTP on boot
chkconfig vsftpd on
rpm --import [public key location]
rsync /home/test1.html root@server6.example.com:/var/pub
system-config-firewall (Push the enable button and check the appropriate boxes. Check.)

46. Create a gzip-compressed backup of /etc in /tmp
#yum info [package name]
#iptables -L
tar czvf /tmp/etc.tar.gz /etc
ip masqu

47. Install the VNC server package
yum install tigervnc-server
lftp student@server6 httpd configuration /etc/httpd/conf/httpd.conf rpm -ql httpd
#yum groupinstall "group name"
#yum remove [package name]

48. Get a list of package groups from yum
IPtables output chain
rsync -a /home/test1.html root@server6.example.com:/var/pub
/etc/yum.repos.d
#yum grouplist

49. Gets kernel version and release number
/var/www/html/
yum remove firefox4
cat >> some_file << _EOF
#uname -r

50. Query information files with RPM
#iptables -L
$ grep -v ^# /etc/nsswitch.conf
/var/log/maillog
#rpm -qi [package name]