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. Generate SSH Keys
ip masqu
rpm -ql vsftpd
ssh-keygen
insert as opposed to append

2. tar options for file name - gzip - and bzip2
rsync -a /home/test1.html root@server6.example.com:/var/pub
cat >> some_file << _EOF
#rpm -qad [package name]
tar fzj

3. Query all documentation with RPM
#rpm -qad [package name]
rpm -qc httpd
MailTo=student@server6.example.com
IPtables input chain

4. List installed and available packages
# star -xattr -H=exustar -c -f=home.star /home/
rpm -qp pkg.rpm
yum list
name-version-release.architecture.rpm

5. Documentation about sysconfig network scripts
ln -s /pub /var/www/html/pub
#iptables -F
chkconfig vsftpd on
/usr/share/doc/initscripts-*/sysconfig.txt

6. Search for command in the doc directory
#yum
# ls -l /usr/share/doc | grep httpd
/etc/sysconfig/vncservers rpm -ql tigervnc-server
2>&1

7. GUI File Manager
#rpm -qac [package name]
nautilus
/etc/sysconfig/resolv.conf
vsftpd

8. Install a package named firefox4
nautilus
yum install firefox4
# grep -i
vncviewer -via student@server6 localhost:2

9. tar options for create - extract - test - and verbose
tar xvzf /tmp/etc.tar.gz /etc
service ntpd restart
system-config-date
tar cxtv

10. Process packets coming out of the system
IPtables output chain
/var/log/secure
rsync /home/test1.html root@server6.example.com:/var/pub
lftp student@server6 httpd configuration /etc/httpd/conf/httpd.conf rpm -ql httpd

11. Persist the web server on boot
/etc/sysconfig/network
#yum remove [package name]
chkconfig httpd on
/usr/share/doc/initscripts-*/sysconfig.txt

12. Install a package group with yum
#yum
service vncserver restart chkconfig vncserver on
#yum groupinstall "group name"
#iptables -L

13. Display packages that match the pathname
#rpm -qac [package name]
system-config-date
IPtables forward chain
yum provides

14. Disk Utility Command
# ls -l /usr/share/doc | grep httpd
service ntpd restart
$ tar xzvf home.tar.gz /home
palimpsest

15. Sync ntp time with the instructor
# star -xattr -H=exustar -c -f=home.star /home/
rsync -PHR /home/test1.html root@server6.example.com:/var/pub
# grep -i
ntpdate -b instructor

16. Set process priority with renice - -20 highest - 20 lowest - 0 is default
# renice -10 proc-id
*.debug /var/log/debug.log service rsyslog restart
yum list
/etc/sysconfig/resolv.conf

17. Start GUI for Firewall
ip masqu
system-config-firewall (Push the enable button and check the appropriate boxes. Check.)
vncviewer -via student@server6 localhost:2
yum provides

18. Redirect errors to std out
/etc/yum.repos.d/
/var/www/html/
2>&1
#rpm -qa | grep [package name]

19. Update a package
rpm -ql vsftpd
yum update
Fully Qualified Domain Name
*.debug /var/log/debug.log service rsyslog restart

20. fqdn
chkconfig vsftpd on
/etc/ssh/sshd_config
Fully Qualified Domain Name
/usr/share/doc/initscripts-*/sysconfig.txt

21. Authentication related messages log
#rpm -uvh [package name]
/var/log/secure
#yum grouplist
/var/log/messages

22. handles dependencies while RPMs do not uses preconfigured repos
yum update
/var/log/messages
#yum groupremove "group name"
#yum

23. Edit files with cat until the _EOF is found
cat >> some_file << _EOF
service vncserver restart chkconfig vncserver on
rpm -qc httpd
#yum groupremove "group name"

24. Disks available for partitions
#yum install [package name]
#yum
/dev
/var/www/html/

25. Local host file (contains hostname). Can contain local system DNS.
lftp student@server6 httpd configuration /etc/httpd/conf/httpd.conf rpm -ql httpd
/etc/hosts
yum provides "*/sbin/sshd"
# cat /var/log/messages | grep [Ff]ailed | less

26. Basic add rule for iptables not persistant unless saved with #/etc/init.d/iptables save
#iptables -I INPUT -p tcp --dport 21 -j Accept
ssh-copy-id root@server6.example.com
system-config-firewall (Push the enable button and check the appropriate boxes. Check.)
cp /home/test1.html /var/www/html/test1.html

27. Install a pkg.rpm locally
rpm localinstall pkg.rpm --nogpgcheck
ntpdate -b instructor
# renice -10 proc-id
IPtables output chain

28. Grep for lines that do not match (-v)
system-config-date
$ grep -v ^# /etc/nsswitch.conf
/etc/sysconfig/network
ssh-keygen

29. Process packets coming into the system
IPtables input chain
system-config-date
/etc/yum.repos.d
GUI menu system/administratrion/firewall

30. Repos for yum
#rpm -qi [package name]
# virsh create /etc/libvert/qemu/vm_file_name.xml
/etc/yum.repos.d
add/remove software GUI

31. Contains RPM database
/var/lib/rpm
rpm -ql vsftpd
# renice -10 proc-id
service ntpd restart

32. Remove a package named firefox4
ip masqu
IPtables forward chain
yum remove firefox4
logwatch

33. Extract a star compressed file
updating the kernel
rsync -a /home/test1.html root@server6.example.com:/var/pub
# star -x -f=home.star
yum install firefox4

34. All messages sent at info priority or higher
ln -s /pub /var/www/html/pub
/var/log/messages
# grep -i
GUI menu system/administratrion/firewall

35. Enable anonymous users - disable local accounts - and disable any uploads to the FTP server
yum update
vsftpd restart
#uname -r
/etc/vsftpd/vsftpd.conf rpm -ql vsftpd

36. Get a list of package groups from yum
/etc/services
#uname -r
#yum grouplist
ntpdate -b instructor

37. Extract /tmp/etc.tar.gz to /etc
palimpsest
updating the kernel
tar xvzf /tmp/etc.tar.gz /etc
# yum

38. Backup a home directory on desktop6 to /tmp on server6
rsync -PHR /home/test1.html root@server6.example.com:/var/pub
# virsh create /etc/libvert/qemu/vm_file_name.xml
#yum remove [package name]
rsync /home root@server6.example.com:/tmp

39. 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
/etc/sysconfig/iptables
rpm -qp pkg.rpm
service ntpd restart

40. Get information about a package named firefox4
yum info firefox4
service sshd restart
yum list
rhn_register

41. Searches for page within the #man yum
nautilus
lftp student@server6 httpd configuration /etc/httpd/conf/httpd.conf rpm -ql httpd
rpm localinstall pkg.rpm --nogpgcheck
man search :/repository

42. Append this to the /etc/rsyslog.conf to send mail to student@server6.example.com
insert as opposed to append
# renice -10 proc-id
/etc/rsyslog.conf
MailTo=student@server6.example.com

43. 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
/usr/share/doc/initscripts-*/sysconfig.txt
/etc/rsyslog.conf
updating the kernel

44. RPM package naming
service ntpd restart
name-version-release.architecture.rpm
#yum grouplist
/var/log/cron

45. FTP package used in RHEL 6
yum remove firefox4
lftp student@server6 httpd configuration /etc/httpd/conf/httpd.conf rpm -ql httpd
#uname -r
vsftpd

46. Remove a package with yum
#yum install [package name]
*.debug /var/log/debug.log service rsyslog restart
#rpm -qac [package name]
#yum remove [package name]

47. Query information files with RPM
system-config-firewall tui
ssh-copy-id root@server6.example.com
#rpm -qi [package name]
#iptables -I INPUT -p tcp --dport 21 -j Accept

48. Remote file copy /home/test1.html to the /var/pub directory on server6
/usr/share/doc/initscripts-*/sysconfig.txt
rsync /home/test1.html root@server6.example.com:/var/pub
#rpm -uvh [package name]
/etc/sysconfig/iptables

49. Flush the firewall of all rules
rpm -q pkg.rpm --scripts
system-config-date
$ grep -v ^# /etc/nsswitch.conf
#iptables -F

50. Start vsftp service
#yum
service ntpd restart
vsftpd restart
IPtables output chain