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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. Create a gzip-compressed backup of /etc in /tmp
tar czvf /tmp/etc.tar.gz /etc
ntpdate -b instructor
Fully Qualified Domain Name
rpm -q pkg.rpm --scripts

2. Start GUI for Firewall
tar xvzf /tmp/etc.tar.gz /etc
system-config-firewall (Push the enable button and check the appropriate boxes. Check.)
yum remove firefox4
#rpm -ivh [package name]

3. Persist the web server on boot
rhn_register
chkconfig httpd on
insert as opposed to append
yum info firefox4

4. tar options for create - extract - test - and verbose
ssh-keygen
# star -x -f=home.star
tar cxtv
vsftpd restart

5. Start the GUI for date configuration
ssh-copy-id root@server6.example.com
vsftpd restart
/etc/yum.repos.d
system-config-date

6. Uninstall a package group with yum
yum info firefox4
#yum groupremove "group name"
$ tar czvf home.tar.gz /home
#iptables -F

7. Searches for page within the #man yum
updating the kernel
man search :/repository
tar fzj
/etc/ssh/sshd_config

8. Query all documentation with RPM
system-config-firewall tui
tar cxtv
#rpm -qad [package name]
MailTo=student@server6.example.com

9. Install the VNC server package
service vncserver restart chkconfig vncserver on
yum install tigervnc-server
*.debug /var/log/debug.log service rsyslog restart
ntpdate -b instructor

10. Configuration for VNC
/var/log/secure
/etc/sysconfig/vncservers rpm -ql tigervnc-server
/dev
yum list

11. Repos for yum
palimpsest
# renice -10 proc-id
/etc/vsftpd/vsftpd.conf rpm -ql vsftpd
/etc/yum.repos.d

12. GUI File Manager
vsftpd
MailTo=student@server6.example.com
#yum grouplist
nautilus

13. Install a package group with yum
palimpsest
/etc/sysconfig/vncservers rpm -ql tigervnc-server
#yum groupinstall "group name"
# yum

14. Email related messages log
yum install firefox4
/var/log/maillog
system-config-firewall tui
#rpm -qad [package name]

15. Append this to the /etc/rsyslog.conf to send mail to student@server6.example.com
IPtables forward chain
rsync /home/test1.html root@server6.example.com:/var/pub
updating the kernel
MailTo=student@server6.example.com

16. Determine which package provides SSH
yum provides "*/sbin/sshd"
yum update
#yum remove [package name]
system-config-firewall tui

17. Kill a VM
#yum remove [package name]
add/remove software GUI
#virsh destroy domain-id
/dev

18. See files installed with a package named vsftpd
#iptables -L
# yum
service sshd restart
rpm -ql vsftpd

19. Use lftp to connect
lftp student@server6 httpd configuration /etc/httpd/conf/httpd.conf rpm -ql httpd
ln -s /pub /var/www/html/pub
rsync /home/test1.html root@server6.example.com:/var/pub
IPtables output chain

20. Remote file copy /home/test1.html to the /var/pub directory on server6
rsync /home/test1.html root@server6.example.com:/var/pub
system-config-firewall tui
yum search firefox
/var/log/maillog

21. Remove a package with yum
tar czvf /tmp/etc.tar.gz /etc
#yum remove [package name]
#iptables -F
rpm -qp pkg.rpm

22. Set a VNC password
tar fzj
vncpasswd
updating the kernel
ln -s /pub /var/www/html/pub

23. GUI install / uninstall with yum
add/remove software GUI
# star -x -f=home.star
/etc/services
# renice -10 proc-id

24. See the configuration files installed with a package named httpd
rpm -qc httpd
tar xvzf /tmp/etc.tar.gz /etc
tar czvf /tmp/etc.tar.gz /etc
tar fzj

25. Program to analyze standard log files and send a summary email to root
2>&1
/var/log/messages
logwatch
service vncserver restart chkconfig vncserver on

26. Remove a package named firefox4
# star -xattr -H=exustar -c -f=home.star /home/
Fully Qualified Domain Name
yum remove firefox4
/etc/yum.repos.d

27. Contains RPM database
/var/lib/rpm
system-config-firewall (Push the enable button and check the appropriate boxes. Check.)
ip masqu
#iptables -D INPUT -p tcp --dport 21 -j accpet

28. Authentication related messages log
cat >> some_file << _EOF
#yum groupinstall "group name"
/var/log/secure
#iptables -F

29. Search for command in the doc directory
# ls -l /usr/share/doc | grep httpd
#virsh destroy domain-id
#yum info [package name]
[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

30. Restart ssh services
vsftpd restart
service sshd restart
yum info firefox4
/usr/share/doc/initscripts-*/sysconfig.txt

31. Install star
GUI menu system/administratrion/firewall
rsync /home root@server6.example.com:/tmp
#virsh list
# yum

32. System config firewall
#yum groupinstall "group name"
# renice -10 proc-id
GUI menu system/administratrion/firewall
vncviewer -via student@server6 localhost:2

33. Flush the firewall of all rules
/var/lib/rpm
#iptables -F
cp /home/test1.html /var/www/html/test1.html
/var/log/cron

34. List scripts that can be run after installation of pkg.rpm
MailTo=student@server6.example.com
#virsh list
rpm -q pkg.rpm --scripts
yum install firefox4

35. Gets kernel version and release number
/var/log/messages
ssh-keygen
yum install firefox4
#uname -r

36. Start vsftp service
yum update
system-config-firewall tui
vsftpd restart
add/remove software GUI

37. Rpm upgrade package u upgrade v verbose h hash
cat >> some_file << _EOF
/var/lib/rpm
/var/log/cron
#rpm -uvh [package name]

38. Install the star compression tool create an archive with the star tool.
Fully Qualified Domain Name
#rpm -qad [package name]
tar czvf /tmp/etc.tar.gz /etc
# star -xattr -H=exustar -c -f=home.star /home/

39. Show IP address with the IP command
vsftpd
#ip addr show
/etc/yum.repos.d/
/dev

40. Create a tar ball with gzip compression of the home dir
insert as opposed to append
$ tar czvf home.tar.gz /home
/etc/ssh/sshd_config
IPtables output chain

41. Copy a public ssh key to server6
ssh-copy-id root@server6.example.com
#iptables -I INPUT -p tcp --dport 21 -j Accept
#yum groupremove "group name"
#rpm -ivh [package name]

42. Stores IPtables rules (filter) chains - input forward output are persistant
# star -x -f=home.star
logwatch
/etc/services
/etc/sysconfig/iptables

43. 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/sysconfig/vncservers rpm -ql tigervnc-server
/etc/yum.repos.d/
# virsh create /etc/libvert/qemu/vm_file_name.xml

44. Generate SSH Keys
# yum
ssh-keygen
yum provides "*/sbin/sshd"
#virsh destroy domain-id

45. Stores filewall rules for the system.
MailTo=student@server6.example.com
chkconfig vsftpd on
/etc/sysconfig/iptables
tar cxtv

46. handles dependencies while RPMs do not uses preconfigured repos
IPtables forward chain
# renice -10 proc-id
rsync -a /home/test1.html root@server6.example.com:/var/pub
#yum

47. fqdn
Fully Qualified Domain Name
lftp student@server6 httpd configuration /etc/httpd/conf/httpd.conf rpm -ql httpd
#yum grouplist
[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

48. Local host file (contains hostname). Can contain local system DNS.
/var/log/cron
#yum groupinstall "group name"
/etc/hosts
# vi /etc/inittab change - id:3:initdefault:

49. Remote file copy /home/test1.html to the /var/pub directory on server6 while preserving metadata
#rpm -qad [package name]
rpm -ql vsftpd
/var/lib/rpm
rsync -a /home/test1.html root@server6.example.com:/var/pub

50. RPM package naming
# renice -10 proc-id
name-version-release.architecture.rpm
insert as opposed to append
*.debug /var/log/debug.log service rsyslog restart