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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. Rpm upgrade package u upgrade v verbose h hash
rhn_register
#rpm -uvh [package name]
#iptables -L
#iptables -F

2. Persist FTP on boot
chkconfig vsftpd on
#iptables -F
rhn_register
/etc/sysconfig/vncservers rpm -ql tigervnc-server

3. Location of repo's
# cat /var/log/messages | grep [Ff]ailed | less
/etc/yum.repos.d/
insert as opposed to append
#yum info [package name]

4. Restart the ntpd service
service ntpd restart
# grep -i
/etc/sysconfig/resolv.conf
yum list

5. Persist the web server on boot
chkconfig httpd on
yum install firefox4
#rpm -ivh [package name]
/etc/services

6. Get information about a package named firefox4
.spec
*.debug /var/log/debug.log service rsyslog restart
# virsh create /etc/libvert/qemu/vm_file_name.xml
yum info firefox4

7. Append add to the end of the IPtables rules. insert will put rule above the deny all rule.
#virsh list
vncpasswd
rpm -q pkg.rpm --scripts
insert as opposed to append

8. Shows network / global network variables: NETWORKING=yes HOSTNAME=shuttlehosti GATEWAY=192.168.88.1
/etc/sysconfig/network
# renice -10 proc-id
/etc/sysconfig/iptables
# star -x -f=home.star

9. Display packages that match the pathname
/etc/services
yum provides
chkconfig httpd on
# grep -i

10. Restart ssh services
service sshd restart
/etc/ssh/sshd_config
#yum
#rpm -qi [package name]

11. List iptables
ssh-keygen
#iptables -L
# vi /etc/inittab change - id:3:initdefault:
palimpsest

12. Register on the RHN
rhn_register
/etc/ssh/sshd_config
$ tar xzvf home.tar.gz /home
#rpm -uvh [package name]

13. File containing information to create rpm package - RPM packages contain these files: libraries or application - any documentation - any configuration files
.spec
#yum remove [package name]
rsync /home root@server6.example.com:/tmp
/etc/sysconfig/vncservers rpm -ql tigervnc-server

14. Remove a package named firefox4
yum remove firefox4
rsync /home root@server6.example.com:/tmp
/etc/yum.repos.d/
yum info firefox4

15. Delete a rule from iptables
#iptables -D INPUT -p tcp --dport 21 -j accpet
#rpm -qi [package name]
#iptables -I INPUT -p tcp --dport 21 -j Accept
system-config-firewall tui

16. Import a public key
#yum groupinstall "group name"
#uname -r
rpm --import [public key location]
vsftpd

17. All messages sent at info priority or higher
rpm --import [public key location]
rpm -q pkg.rpm --scripts
insert as opposed to append
/var/log/messages

18. 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
# virsh create /etc/libvert/qemu/vm_file_name.xml
/var/log/maillog
IPtables input chain

19. Query information files with RPM
IPtables output chain
yum remove firefox4
chkconfig httpd on
#rpm -qi [package name]

20. Email related messages log
cat >> some_file << _EOF
/var/log/maillog
vncviewer -via student@server6 localhost:2
ssh-keygen

21. Search for a package with firefox in the description
#yum grouplist
yum search firefox
# renice -10 proc-id
$ tar xzvf home.tar.gz /home

22. List scripts that can be run after installation of pkg.rpm
#iptables -D INPUT -p tcp --dport 21 -j accpet
rpm -q pkg.rpm --scripts
MailTo=student@server6.example.com
service vncserver restart chkconfig vncserver on

23. Contains RPM database
rsync /home/test1.html root@server6.example.com:/var/pub
/var/lib/rpm
ssh-keygen
tar czvf /tmp/etc.tar.gz /etc

24. Package file named pkg.rpm
ssh-copy-id root@server6.example.com
rpm -qp pkg.rpm
MailTo=student@server6.example.com
name-version-release.architecture.rpm

25. See files installed with a package named vsftpd
vsftpd restart
updating the kernel
rpm -ql vsftpd
#rpm -uvh [package name]

26. Redirect errors to std out
# renice -10 proc-id
2>&1
$ tar czvf home.tar.gz /home
system-config-firewall (Push the enable button and check the appropriate boxes. Check.)

27. Determine which package provides SSH
/etc/hosts
yum install firefox4
$ grep -v ^# /etc/nsswitch.conf
yum provides "*/sbin/sshd"

28. Program to analyze standard log files and send a summary email to root
2>&1
#rpm -uvh [package name]
Fully Qualified Domain Name
logwatch

29. Install star
$ tar czvf home.tar.gz /home
lftp student@server6 httpd configuration /etc/httpd/conf/httpd.conf rpm -ql httpd
# yum
tar czvf /tmp/etc.tar.gz /etc

30. Send all debug level messages to /var/log/debug.log
*.debug /var/log/debug.log service rsyslog restart
/etc/sysconfig/network
yum install tigervnc-server
insert as opposed to append

31. Local host file (contains hostname). Can contain local system DNS.
[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
/var/log/messages
/etc/hosts
ln -s /pub /var/www/html/pub

32. List installed and available packages
rpm --import [public key location]
yum list
/etc/sysconfig/iptables
yum info firefox4

33. Install a pkg.rpm locally
rpm -qp pkg.rpm
Fully Qualified Domain Name
vsftpd
rpm localinstall pkg.rpm --nogpgcheck

34. Extract a star compressed file
IPtables output chain
# star -x -f=home.star
$ grep -v ^# /etc/nsswitch.conf
rpm -qc httpd

35. Should be done with yum and install as opposed to update if done with RPM option "i" should be used and not "u"
/var/www/html/
lftp student@server6 httpd configuration /etc/httpd/conf/httpd.conf rpm -ql httpd
rpm -qc httpd
updating the kernel

36. Shell config tool gropued like GUI firewall configurater.
chkconfig httpd on
ssh-keygen
system-config-firewall tui
lftp student@server6 httpd configuration /etc/httpd/conf/httpd.conf rpm -ql httpd

37. 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
vncpasswd
#virsh destroy domain-id
$ tar czvf home.tar.gz /home

38. Copy a public ssh key to server6
rsync /home/test1.html root@server6.example.com:/var/pub
ssh-copy-id root@server6.example.com
palimpsest
system-config-firewall (Push the enable button and check the appropriate boxes. Check.)

39. Stores filewall rules for the system.
# grep -i
chkconfig vsftpd on
/etc/sysconfig/resolv.conf
/etc/sysconfig/iptables

40. Enable anonymous users - disable local accounts - and disable any uploads to the FTP server
MailTo=student@server6.example.com
/etc/vsftpd/vsftpd.conf rpm -ql vsftpd
chkconfig vsftpd on
#rpm -uvh [package name]

41. tar options for create - extract - test - and verbose
insert as opposed to append
#yum info [package name]
tar cxtv
rsync /home/test1.html root@server6.example.com:/var/pub

42. Repos for yum
#yum grouplist
#yum install [package name]
/etc/yum.repos.d
# grep -i

43. Get a list of package groups from yum
#yum grouplist
/var/log/messages
IPtables input chain
[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

44. Set process priority with renice - -20 highest - 20 lowest - 0 is default
tar cxtv
#virsh destroy domain-id
#yum groupinstall "group name"
# renice -10 proc-id

45. Authentication related messages log
vncpasswd
name-version-release.architecture.rpm
/var/log/secure
/etc/vsftpd/vsftpd.conf rpm -ql vsftpd

46. Install a package with yum
#rpm -qi [package name]
system-config-firewall (Push the enable button and check the appropriate boxes. Check.)
#yum install [package name]
rsync -PHR /home/test1.html root@server6.example.com:/var/pub

47. Sync ntp time with the instructor
#iptables -L
#iptables -D INPUT -p tcp --dport 21 -j accpet
ntpdate -b instructor
#yum groupremove "group name"

48. Set a VNC password
service vncserver restart chkconfig vncserver on
vncpasswd
yum list
#rpm -ivh [package name]

49. Create a gzip-compressed backup of /etc in /tmp
rsync -PHR /home/test1.html root@server6.example.com:/var/pub
system-config-firewall tui
*.debug /var/log/debug.log service rsyslog restart
tar czvf /tmp/etc.tar.gz /etc

50. Gets kernel version and release number
#uname -r
[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 -I INPUT -p tcp --dport 21 -j Accept
#virsh destroy domain-id