Test your basic knowledge |

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. Backup a home directory on desktop6 to /tmp on server6
rsync /home [email protected]:/tmp
system-config-date
# yum
#yum groupinstall "group name"

2. FTP package used in RHEL 6
IPtables output chain
#rpm -qad [package name]
/etc/yum.repos.d/
vsftpd

3. Grep with ignoring case
#rpm -ivh [package name]
#rpm -qad [package name]
# grep -i
name-version-release.architecture.rpm

4. Delete a rule from iptables
rpm localinstall pkg.rpm --nogpgcheck
#yum groupremove "group name"
#iptables -D INPUT -p tcp --dport 21 -j accpet
#yum

5. List VMs
name-version-release.architecture.rpm
service sshd restart
/var/log/maillog
#virsh list

6. Program to analyze standard log files and send a summary email to root
#yum
rpm localinstall pkg.rpm --nogpgcheck
logwatch
ntpdate -b instructor

7. Query configuration files with RPM
vsftpd
#rpm -qac [package name]
/var/log/maillog
#iptables -F

8. Acting as a router with forwarding
tar cxtv
ip masqu
chkconfig httpd on
*.debug /var/log/debug.log service rsyslog restart

9. Local file copy of /home/test1.html to /var/www/html/test1.html
/etc/rsyslog.conf
# renice -10 proc-id
cp /home/test1.html /var/www/html/test1.html
$ tar czvf home.tar.gz /home

10. Remove a package with yum
ntpdate -b instructor
/var/log/maillog
#yum remove [package name]
chkconfig vsftpd on

11. Append this to the /etc/rsyslog.conf to send mail to [email protected]
*.debug /var/log/debug.log service rsyslog restart
[email protected]
# star -x -f=home.star
# yum

12. Update a package
rpm -q pkg.rpm --scripts
yum update
yum install firefox4
/var/log/secure

13. Configuration for VNC
/etc/sysconfig/vncservers rpm -ql tigervnc-server
vncviewer -via student@server6 localhost:2
#yum grouplist
service sshd restart

14. Install the VNC server package
yum install tigervnc-server
/etc/sysconfig/vncservers rpm -ql tigervnc-server
#iptables -D INPUT -p tcp --dport 21 -j accpet
[email protected]

15. Create a gzip-compressed backup of /etc in /tmp
/var/log/maillog
# renice -10 proc-id
tar czvf /tmp/etc.tar.gz /etc
/var/log/cron

16. Set a VNC password
vncpasswd
/var/log/messages
chkconfig httpd on
rsync /home/test1.html [email protected]:/var/pub

17. Sync ntp time with the instructor
.spec
# vi /etc/inittab change - id:3:initdefault:
ntpdate -b instructor
#rpm -qi [package name]

18. Install star
*.debug /var/log/debug.log service rsyslog restart
yum info firefox4
# yum
#yum remove [package name]

19. GUI File Manager
nautilus
logwatch
$ tar xzvf home.tar.gz /home
/var/lib/rpm

20. Get information about a package named firefox4
rsync /home/test1.html [email protected]:/var/pub
/etc/sysconfig/vncservers rpm -ql tigervnc-server
/etc/rsyslog.conf
yum info firefox4

21. Restart the ntpd service
service ntpd restart
/etc/rsyslog.conf
#iptables -L
system-config-firewall tui

22. Disks available for partitions
*.debug /var/log/debug.log service rsyslog restart
$ tar czvf home.tar.gz /home
/dev
#iptables -D INPUT -p tcp --dport 21 -j accpet

23. Send all debug level messages to /var/log/debug.log
system-config-firewall (Push the enable button and check the appropriate boxes. Check.)
#rpm -qa | grep [package name]
*.debug /var/log/debug.log service rsyslog restart
/etc/services

24. Repos for yum
[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
GUI menu system/administratrion/firewall
/etc/yum.repos.d
rsync -a /home/test1.html [email protected]:/var/pub

25. List scripts that can be run after installation of pkg.rpm
rpm -q pkg.rpm --scripts
man search :/repository
GUI menu system/administratrion/firewall
vncpasswd

26. Stores filewall rules for the system.
/etc/sysconfig/iptables
tar czvf /tmp/etc.tar.gz /etc
# cat /var/log/messages | grep [Ff]ailed | less
cat >> some_file << _EOF

27. Extract a star compressed file
palimpsest
tar fzj
yum update
# star -x -f=home.star

28. Connect with VNC viewer securely
vncviewer -via student@server6 localhost:2
/usr/share/doc/initscripts-*/sysconfig.txt
/etc/ssh/sshd_config
service sshd restart

29. Search for command in the doc directory
# ls -l /usr/share/doc | grep httpd
/usr/share/doc/initscripts-*/sysconfig.txt
rpm --import [public key location]
nautilus

30. Start a VM
tar czvf /tmp/etc.tar.gz /etc
palimpsest
#yum grouplist
# virsh create /etc/libvert/qemu/vm_file_name.xml

31. Gets kernel version and release number
#uname -r
/usr/share/doc/initscripts-*/sysconfig.txt
cp /home/test1.html /var/www/html/test1.html
logwatch

32. Primary configuration of ssh
vsftpd restart
system-config-firewall tui
/etc/ssh/sshd_config
name-version-release.architecture.rpm

33. Get a list of package groups from yum
system-config-firewall (Push the enable button and check the appropriate boxes. Check.)
#yum grouplist
yum install firefox4
2>&1

34. Install a pkg.rpm locally
rpm localinstall pkg.rpm --nogpgcheck
vncpasswd
yum install firefox4
#yum install [package name]

35. Process packets being forwarded through the system
# star -x -f=home.star
IPtables forward chain
rsync -a /home/test1.html [email protected]:/var/pub
/etc/rsyslog.conf

36. All messages sent at info priority or higher
#yum install [package name]
yum provides "*/sbin/sshd"
/var/log/messages
rpm -q pkg.rpm --scripts

37. Get more information on a package availale through yum
#yum info [package name]
cp /home/test1.html /var/www/html/test1.html
#rpm -qa | grep [package name]
cat >> some_file << _EOF

38. Grep for lines that do not match (-v)
/etc/vsftpd/vsftpd.conf rpm -ql vsftpd
$ grep -v ^# /etc/nsswitch.conf
tar czvf /tmp/etc.tar.gz /etc
cat >> some_file << _EOF

39. fqdn
logwatch
yum update
Fully Qualified Domain Name
#virsh list

40. See files installed with a package named vsftpd
[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
# cat /var/log/messages | grep [Ff]ailed | less
rpm -ql vsftpd
system-config-firewall tui

41. List installed and available packages
yum list
/var/lib/rpm
# star -x -f=home.star
service ntpd restart

42. Email related messages log
add/remove software GUI
rpm -qp pkg.rpm
/var/log/maillog
yum provides "*/sbin/sshd"

43. Install with RPM
#rpm -ivh [package name]
/etc/yum.repos.d/
[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 -D INPUT -p tcp --dport 21 -j accpet

44. Authentication related messages log
yum remove firefox4
/var/log/secure
#virsh list
$ grep -v ^# /etc/nsswitch.conf

45. Register on the RHN
ln -s /pub /var/www/html/pub
name-version-release.architecture.rpm
rhn_register
$ tar czvf home.tar.gz /home

46. Configuration file for system logs
/var/log/messages
cp /home/test1.html /var/www/html/test1.html
/usr/share/doc/initscripts-*/sysconfig.txt
/etc/rsyslog.conf

47. Flush the firewall of all rules
#yum
name-version-release.architecture.rpm
2>&1
#iptables -F

48. Install a package group with yum
/etc/sysconfig/resolv.conf
yum install firefox4
# cat /var/log/messages | grep [Ff]ailed | less
#yum groupinstall "group name"

49. Copy a public ssh key to server6
chkconfig httpd on
# vi /etc/inittab change - id:3:initdefault:
ssh-copy-id [email protected]
#rpm -qac [package name]

50. RPM package naming
rsync -a /home/test1.html [email protected]:/var/pub
name-version-release.architecture.rpm
#yum install [package name]
/usr/share/doc/initscripts-*/sysconfig.txt