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. Extract a star compressed file
/etc/vsftpd/vsftpd.conf rpm -ql vsftpd
# star -x -f=home.star
/etc/sysconfig/resolv.conf
#iptables -D INPUT -p tcp --dport 21 -j accpet

2. Acting as a router with forwarding
ip masqu
system-config-firewall tui
/var/log/messages
#rpm -qad [package name]

3. Gets kernel version and release number
# renice -10 proc-id
#uname -r
add/remove software GUI
/var/log/secure

4. Create a symbolic link to /pub on the FTP and name it pub
ln -s /pub /var/www/html/pub
/etc/sysconfig/iptables
# star -x -f=home.star
vsftpd restart

5. Display packages that match the pathname
yum provides
rpm -qp pkg.rpm
/etc/sysconfig/network
#rpm -qi [package name]

6. Start GUI for Firewall
# cat /var/log/messages | grep [Ff]ailed | less
#yum remove [package name]
#yum info [package name]
system-config-firewall (Push the enable button and check the appropriate boxes. Check.)

7. FTP package used in RHEL 6
/etc/ssh/sshd_config
vsftpd
/etc/yum.repos.d/
nautilus

8. File containing information to create rpm package - RPM packages contain these files: libraries or application - any documentation - any configuration files
vncviewer -via student@server6 localhost:2
IPtables output chain
yum provides "*/sbin/sshd"
.spec

9. Backup a home directory on desktop6 to /tmp on server6
chkconfig vsftpd on
rsync /home root@server6.example.com:/tmp
rpm -q pkg.rpm --scripts
yum info firefox4

10. Create a gzip-compressed backup of /etc in /tmp
rpm -ql vsftpd
tar xvzf /tmp/etc.tar.gz /etc
service ntpd restart
tar czvf /tmp/etc.tar.gz /etc

11. Copy a public ssh key to server6
ssh-copy-id root@server6.example.com
/var/www/html/
$ tar xzvf home.tar.gz /home
/etc/rsyslog.conf

12. Set a VNC password
ssh-keygen
yum provides
IPtables output chain
vncpasswd

13. Install a package named firefox4
/etc/sysconfig/iptables
yum install firefox4
add/remove software GUI
tar xvzf /tmp/etc.tar.gz /etc

14. Kill a VM
/etc/services
#yum groupremove "group name"
#rpm -qac [package name]
#virsh destroy domain-id

15. See the configuration files installed with a package named httpd
rpm -qc httpd
nautilus
rhn_register
# renice -10 proc-id

16. Local host file (contains hostname). Can contain local system DNS.
/etc/vsftpd/vsftpd.conf rpm -ql vsftpd
nautilus
/etc/hosts
#iptables -L

17. Enable anonymous users - disable local accounts - and disable any uploads to the FTP server
/dev
#rpm -uvh [package name]
/etc/vsftpd/vsftpd.conf rpm -ql vsftpd
rpm -qc httpd

18. Authentication related messages log
/var/log/secure
/var/log/maillog
[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
/etc/sysconfig/vncservers rpm -ql tigervnc-server

19. Messages related to cron log
yum info firefox4
# cat /var/log/messages | grep [Ff]ailed | less
/var/log/cron
#rpm -qi [package name]

20. Determine which package provides SSH
service sshd restart
#yum groupremove "group name"
yum provides "*/sbin/sshd"
rpm --import [public key location]

21. Show IP address with the IP command
/dev
/etc/vsftpd/vsftpd.conf rpm -ql vsftpd
#ip addr show
#virsh list

22. Install a package group with yum
yum update
#yum groupinstall "group name"
# grep -i
.spec

23. Documentation about sysconfig network scripts
vncpasswd
# virsh create /etc/libvert/qemu/vm_file_name.xml
/usr/share/doc/initscripts-*/sysconfig.txt
rsync -a /home/test1.html root@server6.example.com:/var/pub

24. Send all debug level messages to /var/log/debug.log
nautilus
*.debug /var/log/debug.log service rsyslog restart
/var/log/maillog
/usr/share/doc/initscripts-*/sysconfig.txt

25. Install the VNC server package
#virsh destroy domain-id
system-config-firewall tui
system-config-firewall (Push the enable button and check the appropriate boxes. Check.)
yum install tigervnc-server

26. Extract a gzipped tar ball in your home directory
/var/log/maillog
$ tar xzvf home.tar.gz /home
lftp student@server6 httpd configuration /etc/httpd/conf/httpd.conf rpm -ql httpd
$ tar czvf home.tar.gz /home

27. Edit files with cat until the _EOF is found
cat >> some_file << _EOF
#rpm -qi [package name]
#rpm -qac [package name]
# star -x -f=home.star

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

29. Append this to the /etc/rsyslog.conf to send mail to student@server6.example.com
.spec
MailTo=student@server6.example.com
rsync /home root@server6.example.com:/tmp
IPtables input chain

30. Process packets being forwarded through the system
rsync -PHR /home/test1.html root@server6.example.com:/var/pub
name-version-release.architecture.rpm
/var/log/messages
IPtables forward chain

31. Delete a rule from iptables
insert as opposed to append
logwatch
palimpsest
#iptables -D INPUT -p tcp --dport 21 -j accpet

32. Start vsftp service
MailTo=student@server6.example.com
rpm -qp pkg.rpm
chkconfig vsftpd on
vsftpd restart

33. Repo config file
[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 update
/var/www/html/
service vncserver restart chkconfig vncserver on

34. Restart vnc and persist on boot
/etc/ssh/sshd_config
rsync -a /home/test1.html root@server6.example.com:/var/pub
service vncserver restart chkconfig vncserver on
/dev

35. Update a package
chkconfig httpd on
man search :/repository
yum update
tar xvzf /tmp/etc.tar.gz /etc

36. Append add to the end of the IPtables rules. insert will put rule above the deny all rule.
rsync /home root@server6.example.com:/tmp
yum install tigervnc-server
insert as opposed to append
#rpm -ivh [package name]

37. Shows network / global network variables: NETWORKING=yes HOSTNAME=shuttlehosti GATEWAY=192.168.88.1
/etc/sysconfig/network
/etc/vsftpd/vsftpd.conf rpm -ql vsftpd
ssh-copy-id root@server6.example.com
GUI menu system/administratrion/firewall

38. Grep with ignoring case
yum remove firefox4
#rpm -qad [package name]
# grep -i
system-config-firewall (Push the enable button and check the appropriate boxes. Check.)

39. Query information files with RPM
# star -xattr -H=exustar -c -f=home.star /home/
#rpm -qi [package name]
/etc/sysconfig/iptables
GUI menu system/administratrion/firewall

40. Configuration for VNC
insert as opposed to append
#yum grouplist
system-config-firewall (Push the enable button and check the appropriate boxes. Check.)
/etc/sysconfig/vncservers rpm -ql tigervnc-server

41. Start a VM
/var/log/cron
#yum grouplist
#ip addr show
# virsh create /etc/libvert/qemu/vm_file_name.xml

42. Get more information on a package availale through yum
ssh-copy-id root@server6.example.com
man search :/repository
#yum info [package name]
IPtables forward chain

43. Program to analyze standard log files and send a summary email to root
logwatch
#rpm -qad [package name]
#iptables -I INPUT -p tcp --dport 21 -j Accept
cp /home/test1.html /var/www/html/test1.html

44. Get a list of package groups from yum
cp /home/test1.html /var/www/html/test1.html
#yum install [package name]
#yum info [package name]
#yum grouplist

45. GUI File Manager
.spec
chkconfig httpd on
nautilus
#rpm -qi [package name]

46. Search for a package within all packages
#uname -r
#rpm -qa | grep [package name]
rsync /home root@server6.example.com:/tmp
cat >> some_file << _EOF

47. System config firewall
GUI menu system/administratrion/firewall
IPtables input chain
rsync /home/test1.html root@server6.example.com:/var/pub
MailTo=student@server6.example.com

48. GUI install / uninstall with yum
add/remove software GUI
tar fzj
tar xvzf /tmp/etc.tar.gz /etc
ip masqu

49. Remove a package with yum
$ tar czvf home.tar.gz /home
ntpdate -b instructor
#yum remove [package name]
cp /home/test1.html /var/www/html/test1.html

50. List installed and available packages
# virsh create /etc/libvert/qemu/vm_file_name.xml
yum list
#rpm -ivh [package name]
vncviewer -via student@server6 localhost:2