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. Query information files with RPM
*.debug /var/log/debug.log service rsyslog restart
ln -s /pub /var/www/html/pub
#rpm -qa | grep [package name]
#rpm -qi [package name]

2. List installed and available packages
/var/www/html/
yum remove firefox4
#yum
yum list

3. Remove a package with yum
#yum remove [package name]
$ tar czvf home.tar.gz /home
chkconfig vsftpd on
ln -s /pub /var/www/html/pub

4. Authentication related messages log
system-config-firewall tui
/var/log/secure
tar czvf /tmp/etc.tar.gz /etc
add/remove software GUI

5. Create a gzip-compressed backup of /etc in /tmp
tar czvf /tmp/etc.tar.gz /etc
rpm -ql vsftpd
#yum grouplist
ssh-copy-id [email protected]

6. Set process priority with renice - -20 highest - 20 lowest - 0 is default
.spec
# renice -10 proc-id
#yum info [package name]
2>&1

7. Search for a package within all packages
#rpm -ivh [package name]
#rpm -qa | grep [package name]
#yum groupremove "group name"
add/remove software GUI

8. List iptables
#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
/etc/sysconfig/vncservers rpm -ql tigervnc-server
yum provides "*/sbin/sshd"

9. Start vsftp service
#yum remove [package name]
palimpsest
ssh-keygen
vsftpd restart

10. Remove a package named firefox4
tar xvzf /tmp/etc.tar.gz /etc
yum remove firefox4
/var/log/maillog
# cat /var/log/messages | grep [Ff]ailed | less

11. GUI install / uninstall with yum
IPtables output chain
vsftpd restart
# star -xattr -H=exustar -c -f=home.star /home/
add/remove software GUI

12. Persist FTP on boot
chkconfig vsftpd on
rsync -PHR /home/test1.html [email protected]:/var/pub
/etc/sysconfig/resolv.conf
ln -s /pub /var/www/html/pub

13. File holding services - ports - protocols assoicated
/var/log/maillog
/etc/services
man search :/repository
/etc/yum.repos.d

14. Grep with ignoring case
# virsh create /etc/libvert/qemu/vm_file_name.xml
/dev
# grep -i
.spec

15. See files installed with a package named vsftpd
/etc/yum.repos.d/
rpm -ql vsftpd
logwatch
IPtables output chain

16. fqdn
rpm localinstall pkg.rpm --nogpgcheck
#iptables -D INPUT -p tcp --dport 21 -j accpet
#virsh list
Fully Qualified Domain Name

17. Rpm upgrade package u upgrade v verbose h hash
#rpm -uvh [package name]
$ tar czvf home.tar.gz /home
/var/log/cron
# renice -10 proc-id

18. Configuration for VNC
/etc/sysconfig/vncservers rpm -ql tigervnc-server
$ tar xzvf home.tar.gz /home
logwatch
/etc/sysconfig/resolv.conf

19. An example of searching through system logs with interpretation.
# cat /var/log/messages | grep [Ff]ailed | less
chkconfig vsftpd on
/etc/services
$ tar czvf home.tar.gz /home

20. Basic add rule for iptables not persistant unless saved with #/etc/init.d/iptables save
#rpm -qac [package name]
#iptables -I INPUT -p tcp --dport 21 -j Accept
rpm -ql vsftpd
name-version-release.architecture.rpm

21. handles dependencies while RPMs do not uses preconfigured repos
$ tar czvf home.tar.gz /home
#yum
insert as opposed to append
ln -s /pub /var/www/html/pub

22. Start a VM
/var/lib/rpm
lftp student@server6 httpd configuration /etc/httpd/conf/httpd.conf rpm -ql httpd
#ip addr show
# virsh create /etc/libvert/qemu/vm_file_name.xml

23. Repos for yum
/etc/yum.repos.d
GUI menu system/administratrion/firewall
/dev
add/remove software GUI

24. Process packets coming into the system
IPtables input chain
# star -xattr -H=exustar -c -f=home.star /home/
/etc/sysconfig/resolv.conf
rsync -PHR /home/test1.html [email protected]:/var/pub

25. Register on the RHN
ntpdate -b instructor
rpm -qc httpd
#yum info [package name]
rhn_register

26. Enable anonymous users - disable local accounts - and disable any uploads to the FTP server
/etc/vsftpd/vsftpd.conf rpm -ql vsftpd
IPtables forward chain
/etc/hosts
yum list

27. Searches for page within the #man yum
rsync -a /home/test1.html [email protected]:/var/pub
#rpm -qi [package name]
man search :/repository
#yum

28. Local file copy of /home/test1.html to /var/www/html/test1.html
$ tar xzvf home.tar.gz /home
rpm -qp pkg.rpm
cp /home/test1.html /var/www/html/test1.html
updating the kernel

29. Determine which package provides SSH
*.debug /var/log/debug.log service rsyslog restart
#rpm -qa | grep [package name]
yum list
yum provides "*/sbin/sshd"

30. Get information about a package named firefox4
/var/log/maillog
rsync -a /home/test1.html [email protected]:/var/pub
yum info firefox4
system-config-firewall (Push the enable button and check the appropriate boxes. Check.)

31. Backup a home directory on desktop6 to /tmp on server6
#yum install [package name]
# cat /var/log/messages | grep [Ff]ailed | less
/var/www/html/
rsync /home [email protected]:/tmp

32. Install the star compression tool create an archive with the star tool.
ssh-keygen
# star -xattr -H=exustar -c -f=home.star /home/
yum provides "*/sbin/sshd"
*.debug /var/log/debug.log service rsyslog restart

33. Connect with VNC viewer securely
vncviewer -via student@server6 localhost:2
#uname -r
tar xvzf /tmp/etc.tar.gz /etc
/var/log/secure

34. Append add to the end of the IPtables rules. insert will put rule above the deny all rule.
insert as opposed to append
rsync /home/test1.html [email protected]:/var/pub
#yum grouplist
vncpasswd

35. Create a tar ball with gzip compression of the home dir
/etc/sysconfig/iptables
/etc/yum.repos.d/
$ tar czvf home.tar.gz /home
$ grep -v ^# /etc/nsswitch.conf

36. Query configuration files with RPM
rpm -ql vsftpd
name-version-release.architecture.rpm
#rpm -qac [package name]
/etc/yum.repos.d

37. Adjust the persistent runlevel
# virsh create /etc/libvert/qemu/vm_file_name.xml
# ls -l /usr/share/doc | grep httpd
vsftpd restart
# vi /etc/inittab change - id:3:initdefault:

38. Gets kernel version and release number
vsftpd
#uname -r
/dev
/var/log/maillog

39. Set a VNC password
2>&1
GUI menu system/administratrion/firewall
/var/log/cron
vncpasswd

40. List scripts that can be run after installation of pkg.rpm
#rpm -ivh [package name]
rpm -q pkg.rpm --scripts
[email protected]
#iptables -D INPUT -p tcp --dport 21 -j accpet

41. Install with RPM
service sshd restart
system-config-firewall (Push the enable button and check the appropriate boxes. Check.)
#rpm -ivh [package name]
ln -s /pub /var/www/html/pub

42. Extract a star compressed file
/var/log/messages
rpm -qp pkg.rpm
service ntpd restart
# star -x -f=home.star

43. Update a package
# renice -10 proc-id
service vncserver restart chkconfig vncserver on
rpm --import [public key location]
yum update

44. Disks available for partitions
#yum groupinstall "group name"
[email protected]
# star -x -f=home.star
/dev

45. Sync ntp time with the instructor
/etc/yum.repos.d/
#uname -r
add/remove software GUI
ntpdate -b instructor

46. Copy a public ssh key to server6
ssh-copy-id [email protected]
/var/www/html/
/etc/sysconfig/network
#ip addr show

47. Install star
chkconfig vsftpd on
vncviewer -via student@server6 localhost:2
# ls -l /usr/share/doc | grep httpd
# yum

48. Redirect errors to std out
/etc/sysconfig/network
cp /home/test1.html /var/www/html/test1.html
2>&1
vsftpd restart

49. tar options for file name - gzip - and bzip2
#yum groupinstall "group name"
cp /home/test1.html /var/www/html/test1.html
tar fzj
yum install tigervnc-server

50. Contains RPM database
man search :/repository
yum info firefox4
/var/lib/rpm
yum provides