Test your basic knowledge |

RHCSA Commands

Subjects : certifications, it-skills, rhcsa

Instructions:

Answer 50 questions in 15 minutes.
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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. Install with RPM
yum provides "*/sbin/sshd"
# grep -i
yum search firefox
#rpm -ivh [package name]

2. Local host file (contains hostname). Can contain local system DNS.
chkconfig vsftpd on
ip masqu
/var/log/maillog
/etc/hosts

3. Remote file copy /home/test1.html to the /var/pub directory on server6
rsync /home/test1.html root@server6.example.com:/var/pub
# virsh create /etc/libvert/qemu/vm_file_name.xml
#yum grouplist
vncviewer -via student@server6 localhost:2

4. Configuration for VNC
# yum
tar xvzf /tmp/etc.tar.gz /etc
/etc/sysconfig/vncservers rpm -ql tigervnc-server
# star -x -f=home.star

5. Install a package with yum
#yum install [package name]
$ tar xzvf home.tar.gz /home
rpm --import [public key location]
system-config-date

6. Process packets coming out of the system
#iptables -L
IPtables output chain
ip masqu
# grep -i

7. Basic add rule for iptables not persistant unless saved with #/etc/init.d/iptables save
#iptables -I INPUT -p tcp --dport 21 -j Accept
/etc/ssh/sshd_config
2>&1
/etc/sysconfig/iptables

8. handles dependencies while RPMs do not uses preconfigured repos
rpm --import [public key location]
#yum
ln -s /pub /var/www/html/pub
#yum groupinstall "group name"

9. Disks available for partitions
# vi /etc/inittab change - id:3:initdefault:
/etc/hosts
/dev
rsync /home root@server6.example.com:/tmp

10. Copy a public ssh key to server6
ssh-copy-id root@server6.example.com
/etc/sysconfig/vncservers rpm -ql tigervnc-server
logwatch
/etc/hosts

11. Stores IPtables rules (filter) chains - input forward output are persistant
/etc/yum.repos.d
#rpm -qi [package name]
ssh-copy-id root@server6.example.com
/etc/sysconfig/iptables

12. Grep for lines that do not match (-v)
rpm localinstall pkg.rpm --nogpgcheck
$ grep -v ^# /etc/nsswitch.conf
#iptables -I INPUT -p tcp --dport 21 -j Accept
logwatch

13. Search for a package within all packages
#rpm -qa | grep [package name]
#yum groupinstall "group name"
vncpasswd
/etc/sysconfig/iptables

14. Get information about a package named firefox4
$ tar czvf home.tar.gz /home
yum info firefox4
#yum remove [package name]
# cat /var/log/messages | grep [Ff]ailed | less

15. Start a VM
#virsh destroy domain-id
#virsh list
/etc/vsftpd/vsftpd.conf rpm -ql vsftpd
# virsh create /etc/libvert/qemu/vm_file_name.xml

16. Shows network / global network variables: NETWORKING=yes HOSTNAME=shuttlehosti GATEWAY=192.168.88.1
$ grep -v ^# /etc/nsswitch.conf
#yum grouplist
# ls -l /usr/share/doc | grep httpd
/etc/sysconfig/network

17. Update a package
yum update
# star -x -f=home.star
name-version-release.architecture.rpm
/etc/ssh/sshd_config

18. Query configuration files with RPM
#rpm -qac [package name]
yum provides "*/sbin/sshd"
palimpsest
#iptables -D INPUT -p tcp --dport 21 -j accpet

19. Send all debug level messages to /var/log/debug.log
insert as opposed to append
rpm -q pkg.rpm --scripts
*.debug /var/log/debug.log service rsyslog restart
palimpsest

20. Extract a star compressed file
# virsh create /etc/libvert/qemu/vm_file_name.xml
# star -x -f=home.star
yum provides "*/sbin/sshd"
palimpsest

21. Create a symbolic link to /pub on the FTP and name it pub
ln -s /pub /var/www/html/pub
tar fzj
$ grep -v ^# /etc/nsswitch.conf
/var/log/maillog

22. Enable anonymous users - disable local accounts - and disable any uploads to the FTP server
/etc/sysconfig/network
system-config-firewall (Push the enable button and check the appropriate boxes. Check.)
/etc/vsftpd/vsftpd.conf rpm -ql vsftpd
/var/lib/rpm

23. Process packets being forwarded through the system
rsync -a /home/test1.html root@server6.example.com:/var/pub
rsync /home root@server6.example.com:/tmp
IPtables forward chain
/etc/vsftpd/vsftpd.conf rpm -ql vsftpd

24. Install star
chkconfig vsftpd on
#ip addr show
# yum
#virsh destroy domain-id

25. Start the GUI for date configuration
vsftpd
#yum groupinstall "group name"
yum update
system-config-date

26. Local file copy of /home/test1.html to /var/www/html/test1.html
/var/www/html/
GUI menu system/administratrion/firewall
/etc/sysconfig/iptables
cp /home/test1.html /var/www/html/test1.html

27. Get more information on a package availale through yum
#iptables -I INPUT -p tcp --dport 21 -j Accept
#yum info [package name]
*.debug /var/log/debug.log service rsyslog restart
/etc/services

28. Extract /tmp/etc.tar.gz to /etc
# ls -l /usr/share/doc | grep httpd
tar xvzf /tmp/etc.tar.gz /etc
palimpsest
[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

29. Install a pkg.rpm locally
$ grep -v ^# /etc/nsswitch.conf
/etc/services
IPtables output chain
rpm localinstall pkg.rpm --nogpgcheck

30. Connect with VNC viewer securely
[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
chkconfig httpd on
updating the kernel
vncviewer -via student@server6 localhost:2

31. Remote copy /home/test1.html to the /var/pub directory on server6 with progress - preserving hard links - and using relative path names
yum update
rsync -PHR /home/test1.html root@server6.example.com:/var/pub
vsftpd restart
yum info firefox4

32. 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
#virsh destroy domain-id
#yum groupremove "group name"
# grep -i

33. Determine which package provides SSH
ssh-copy-id root@server6.example.com
insert as opposed to append
$ tar czvf home.tar.gz /home
yum provides "*/sbin/sshd"

34. Messages related to cron log
yum remove firefox4
/var/log/cron
#rpm -qad [package name]
#ip addr show

35. Create a gzip-compressed backup of /etc in /tmp
#yum install [package name]
/var/log/cron
/dev
tar czvf /tmp/etc.tar.gz /etc

36. Query all documentation with RPM
IPtables input chain
#rpm -qad [package name]
service vncserver restart chkconfig vncserver on
IPtables forward chain

37. Edit files with cat until the _EOF is found
$ grep -v ^# /etc/nsswitch.conf
chkconfig vsftpd on
cat >> some_file << _EOF
#rpm -qac [package name]

38. Import a public key
vncpasswd
/etc/ssh/sshd_config
yum install tigervnc-server
rpm --import [public key location]

39. Program to analyze standard log files and send a summary email to root
#rpm -uvh [package name]
logwatch
cp /home/test1.html /var/www/html/test1.html
#ip addr show

40. RPM package naming
*.debug /var/log/debug.log service rsyslog restart
vncpasswd
name-version-release.architecture.rpm
cp /home/test1.html /var/www/html/test1.html

41. Remove a package named firefox4
yum remove firefox4
vncviewer -via student@server6 localhost:2
#yum install [package name]
#yum groupinstall "group name"

42. Configuration file for system logs
/etc/rsyslog.conf
/etc/services
system-config-firewall (Push the enable button and check the appropriate boxes. Check.)
ssh-copy-id root@server6.example.com

43. Get a list of package groups from yum
#virsh destroy domain-id
#yum grouplist
ssh-copy-id root@server6.example.com
# virsh create /etc/libvert/qemu/vm_file_name.xml

44. See the configuration files installed with a package named httpd
#virsh list
nautilus
rpm -qc httpd
vncpasswd

45. Package file named pkg.rpm
#yum groupremove "group name"
/dev
.spec
rpm -qp pkg.rpm

46. Set process priority with renice - -20 highest - 20 lowest - 0 is default
#virsh list
system-config-date
/etc/sysconfig/resolv.conf
# renice -10 proc-id

47. Documentation about sysconfig network scripts
name-version-release.architecture.rpm
/etc/yum.repos.d
#rpm -qi [package name]
/usr/share/doc/initscripts-*/sysconfig.txt

48. Adjust the persistent runlevel
yum provides
/usr/share/doc/initscripts-*/sysconfig.txt
# vi /etc/inittab change - id:3:initdefault:
vncpasswd

49. Restart the ntpd service
#uname -r
# ls -l /usr/share/doc | grep httpd
service ntpd restart
yum install firefox4

50. Remote file copy /home/test1.html to the /var/pub directory on server6 while preserving metadata
# grep -i
#iptables -D INPUT -p tcp --dport 21 -j accpet
system-config-firewall (Push the enable button and check the appropriate boxes. Check.)
rsync -a /home/test1.html root@server6.example.com:/var/pub

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Test your basic knowledge |

RHCSA Commands

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