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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. Disk Utility Command
palimpsest
/etc/hosts
rsync /home/test1.html root@server6.example.com:/var/pub
#ip addr show

2. Shell config tool gropued like GUI firewall configurater.
#rpm -qa | grep [package name]
system-config-firewall tui
yum info firefox4
$ tar czvf home.tar.gz /home

3. Authentication related messages log
IPtables input chain
/var/log/secure
#iptables -F
/var/log/cron

4. 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
#yum groupinstall "group name"
/etc/sysconfig/iptables
yum info firefox4

5. Delete a rule from iptables
rsync /home/test1.html root@server6.example.com:/var/pub
/etc/vsftpd/vsftpd.conf rpm -ql vsftpd
ssh-keygen
#iptables -D INPUT -p tcp --dport 21 -j accpet

6. List VMs
yum provides
chkconfig vsftpd on
#virsh list
rpm -ql vsftpd

7. Remote copy /home/test1.html to the /var/pub directory on server6 with progress - preserving hard links - and using relative path names
#yum groupinstall "group name"
rsync -PHR /home/test1.html root@server6.example.com:/var/pub
name-version-release.architecture.rpm
/usr/share/doc/initscripts-*/sysconfig.txt

8. Searches for page within the #man yum
man search :/repository
#iptables -I INPUT -p tcp --dport 21 -j Accept
#yum info [package name]
rpm -q pkg.rpm --scripts

9. tar options for file name - gzip - and bzip2
updating the kernel
system-config-firewall tui
#rpm -ivh [package name]
tar fzj

10. Install the VNC server package
[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
#rpm -qi [package name]
yum install tigervnc-server
.spec

11. File holding services - ports - protocols assoicated
service sshd restart
yum update
/etc/services
system-config-date

12. Generate SSH Keys
ssh-keygen
#virsh destroy domain-id
add/remove software GUI
/etc/yum.repos.d/

13. Restart the ntpd service
cat >> some_file << _EOF
ssh-keygen
yum install tigervnc-server
service ntpd restart

14. Program to analyze standard log files and send a summary email to root
ln -s /pub /var/www/html/pub
$ grep -v ^# /etc/nsswitch.conf
logwatch
#yum info [package name]

15. Stores filewall rules for the system.
/etc/rsyslog.conf
/etc/sysconfig/iptables
IPtables input chain
/dev

16. Extract a star compressed file
# star -x -f=home.star
/var/log/cron
#yum info [package name]
/usr/share/doc/initscripts-*/sysconfig.txt

17. Extract a gzipped tar ball in your home directory
$ tar xzvf home.tar.gz /home
yum install tigervnc-server
#iptables -I INPUT -p tcp --dport 21 -j Accept
rpm --import [public key location]

18. See the configuration files installed with a package named httpd
yum provides "*/sbin/sshd"
ssh-copy-id root@server6.example.com
rsync -PHR /home/test1.html root@server6.example.com:/var/pub
rpm -qc httpd

19. Adjust the persistent runlevel
# renice -10 proc-id
#ip addr show
# star -xattr -H=exustar -c -f=home.star /home/
# vi /etc/inittab change - id:3:initdefault:

20. Create a symbolic link to /pub on the FTP and name it pub
#yum remove [package name]
# yum
ln -s /pub /var/www/html/pub
rpm --import [public key location]

21. Query configuration files with RPM
#rpm -qac [package name]
/etc/hosts
# cat /var/log/messages | grep [Ff]ailed | less
tar czvf /tmp/etc.tar.gz /etc

22. GUI File Manager
nautilus
system-config-firewall (Push the enable button and check the appropriate boxes. Check.)
rpm -qc httpd
IPtables output chain

23. Kill a VM
#virsh destroy domain-id
#rpm -qi [package name]
# cat /var/log/messages | grep [Ff]ailed | less
#yum grouplist

24. Update a package
#iptables -D INPUT -p tcp --dport 21 -j accpet
lftp student@server6 httpd configuration /etc/httpd/conf/httpd.conf rpm -ql httpd
service ntpd restart
yum update

25. Connect with VNC viewer securely
yum list
# virsh create /etc/libvert/qemu/vm_file_name.xml
man search :/repository
vncviewer -via student@server6 localhost:2

26. Uninstall a package group with yum
#iptables -L
#yum groupremove "group name"
service vncserver restart chkconfig vncserver on
man search :/repository

27. RPM package naming
vncviewer -via student@server6 localhost:2
system-config-firewall (Push the enable button and check the appropriate boxes. Check.)
name-version-release.architecture.rpm
service ntpd restart

28. Create a gzip-compressed backup of /etc in /tmp
# virsh create /etc/libvert/qemu/vm_file_name.xml
tar czvf /tmp/etc.tar.gz /etc
tar fzj
#rpm -qi [package name]

29. Gets kernel version and release number
$ tar czvf home.tar.gz /home
#uname -r
vncpasswd
rsync -PHR /home/test1.html root@server6.example.com:/var/pub

30. Remove a package named firefox4
yum remove firefox4
cat >> some_file << _EOF
$ tar xzvf home.tar.gz /home
/var/www/html/

31. Search for a package within all packages
# cat /var/log/messages | grep [Ff]ailed | less
#rpm -qa | grep [package name]
/etc/yum.repos.d/
rsync /home root@server6.example.com:/tmp

32. Where are HTML pages hosted?
man search :/repository
ssh-keygen
#rpm -qac [package name]
/var/www/html/

33. Send all debug level messages to /var/log/debug.log
/var/log/messages
/var/log/maillog
/var/log/cron
*.debug /var/log/debug.log service rsyslog restart

34. Set process priority with renice - -20 highest - 20 lowest - 0 is default
system-config-firewall (Push the enable button and check the appropriate boxes. Check.)
# renice -10 proc-id
/etc/yum.repos.d
Fully Qualified Domain Name

35. Show IP address with the IP command
# grep -i
chkconfig vsftpd on
tar fzj
#ip addr show

36. Display packages that match the pathname
yum provides
MailTo=student@server6.example.com
IPtables forward chain
chkconfig vsftpd on

37. Install with RPM
# renice -10 proc-id
#rpm -ivh [package name]
.spec
cat >> some_file << _EOF

38. fqdn
# star -xattr -H=exustar -c -f=home.star /home/
Fully Qualified Domain Name
name-version-release.architecture.rpm
rsync -a /home/test1.html root@server6.example.com:/var/pub

39. Start the GUI for date configuration
vncviewer -via student@server6 localhost:2
system-config-date
# grep -i
nautilus

40. Restart ssh services
yum info firefox4
lftp student@server6 httpd configuration /etc/httpd/conf/httpd.conf rpm -ql httpd
vsftpd
service sshd restart

41. Rpm upgrade package u upgrade v verbose h hash
#yum groupinstall "group name"
man search :/repository
/etc/yum.repos.d/
#rpm -uvh [package name]

42. Get information about a package named firefox4
#yum groupinstall "group name"
2>&1
yum info firefox4
Fully Qualified Domain Name

43. Search for a package with firefox in the description
#yum info [package name]
vncviewer -via student@server6 localhost:2
#rpm -uvh [package name]
yum search firefox

44. Append this to the /etc/rsyslog.conf to send mail to student@server6.example.com
/var/log/maillog
/etc/vsftpd/vsftpd.conf rpm -ql vsftpd
MailTo=student@server6.example.com
ln -s /pub /var/www/html/pub

45. List scripts that can be run after installation of pkg.rpm
/var/log/messages
yum list
IPtables input chain
rpm -q pkg.rpm --scripts

46. Configuration for VNC
yum install firefox4
/etc/sysconfig/iptables
/etc/sysconfig/vncservers rpm -ql tigervnc-server
.spec

47. 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
system-config-firewall tui
#iptables -I INPUT -p tcp --dport 21 -j Accept
rpm -q pkg.rpm --scripts

48. Get a list of package groups from yum
#iptables -D INPUT -p tcp --dport 21 -j accpet
/var/log/secure
#yum grouplist
/etc/ssh/sshd_config

49. System config firewall
man search :/repository
GUI menu system/administratrion/firewall
.spec
vsftpd restart

50. Process packets coming into the system
#rpm -ivh [package name]
/var/log/messages
IPtables input chain
rpm -q pkg.rpm --scripts