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. GUI File Manager
GUI menu system/administratrion/firewall
lftp student@server6 httpd configuration /etc/httpd/conf/httpd.conf rpm -ql httpd
nautilus
yum info firefox4

2. An example of searching through system logs with interpretation.
rsync -a /home/test1.html root@server6.example.com:/var/pub
nautilus
/var/www/html/
# cat /var/log/messages | grep [Ff]ailed | less

3. Email related messages log
*.debug /var/log/debug.log service rsyslog restart
/var/log/maillog
/etc/sysconfig/iptables
IPtables input chain

4. 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 -q pkg.rpm --scripts
yum install tigervnc-server
yum list

5. Restart vnc and persist on boot
ntpdate -b instructor
service vncserver restart chkconfig vncserver on
service ntpd restart
cp /home/test1.html /var/www/html/test1.html

6. Contains RPM database
yum provides
vncviewer -via student@server6 localhost:2
/var/lib/rpm
2>&1

7. Display packages that match the pathname
yum provides
vncviewer -via student@server6 localhost:2
rpm -ql vsftpd
system-config-date

8. Repo config file
#yum install [package name]
#yum groupremove "group name"
#rpm -qad [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

9. Show IP address with the IP command
# cat /var/log/messages | grep [Ff]ailed | less
#ip addr show
yum list
rsync /home root@server6.example.com:/tmp

10. Create a tar ball with gzip compression of the home dir
Fully Qualified Domain Name
# cat /var/log/messages | grep [Ff]ailed | less
rpm -qc httpd
$ tar czvf home.tar.gz /home

11. File holding services - ports - protocols assoicated
#yum
logwatch
/etc/services
rpm -ql vsftpd

12. Install a package group with yum
#yum groupinstall "group name"
#rpm -qa | grep [package name]
/var/log/maillog
/etc/sysconfig/vncservers rpm -ql tigervnc-server

13. Sync ntp time with the instructor
ntpdate -b instructor
#iptables -F
service sshd restart
# vi /etc/inittab change - id:3:initdefault:

14. Package file named pkg.rpm
chkconfig httpd on
vsftpd
rpm -qp pkg.rpm
*.debug /var/log/debug.log service rsyslog restart

15. Acting as a router with forwarding
#yum groupinstall "group name"
ip masqu
rsync -a /home/test1.html root@server6.example.com:/var/pub
/etc/ssh/sshd_config

16. Messages related to cron log
/var/log/cron
#rpm -qi [package name]
2>&1
ssh-copy-id root@server6.example.com

17. Flush the firewall of all rules
vncpasswd
#rpm -uvh [package name]
#yum groupinstall "group name"
#iptables -F

18. Remove a package with yum
yum search firefox
/etc/sysconfig/resolv.conf
#yum remove [package name]
.spec

19. Start vsftp service
vsftpd restart
IPtables output chain
rsync -PHR /home/test1.html root@server6.example.com:/var/pub
# star -xattr -H=exustar -c -f=home.star /home/

20. Grep for lines that do not match (-v)
/etc/vsftpd/vsftpd.conf rpm -ql vsftpd
yum search firefox
$ grep -v ^# /etc/nsswitch.conf
*.debug /var/log/debug.log service rsyslog restart

21. See the configuration files installed with a package named httpd
*.debug /var/log/debug.log service rsyslog restart
rpm -qc httpd
man search :/repository
service vncserver restart chkconfig vncserver on

22. Program to analyze standard log files and send a summary email to root
#yum
vsftpd
ssh-copy-id root@server6.example.com
logwatch

23. fqdn
Fully Qualified Domain Name
.spec
$ tar xzvf home.tar.gz /home
/etc/vsftpd/vsftpd.conf rpm -ql vsftpd

24. handles dependencies while RPMs do not uses preconfigured repos
2>&1
#yum
#uname -r
yum remove firefox4

25. Search for a package within all packages
tar fzj
$ tar xzvf home.tar.gz /home
/etc/ssh/sshd_config
#rpm -qa | grep [package name]

26. List scripts that can be run after installation of pkg.rpm
updating the kernel
rpm -q pkg.rpm --scripts
# yum
#rpm -uvh [package name]

27. Use lftp to connect
#virsh list
lftp student@server6 httpd configuration /etc/httpd/conf/httpd.conf rpm -ql httpd
/var/log/cron
$ tar xzvf home.tar.gz /home

28. Process packets coming into the system
/usr/share/doc/initscripts-*/sysconfig.txt
IPtables input chain
*.debug /var/log/debug.log service rsyslog restart
yum update

29. Shows network / global network variables: NETWORKING=yes HOSTNAME=shuttlehosti GATEWAY=192.168.88.1
/etc/sysconfig/network
yum remove firefox4
system-config-date
#rpm -qa | grep [package name]

30. GUI install / uninstall with yum
rsync /home/test1.html root@server6.example.com:/var/pub
palimpsest
add/remove software GUI
GUI menu system/administratrion/firewall

31. Grep with ignoring case
/etc/rsyslog.conf
# grep -i
#yum info [package name]
# virsh create /etc/libvert/qemu/vm_file_name.xml

32. Start a VM
/etc/yum.repos.d/
/etc/services
/var/log/messages
# virsh create /etc/libvert/qemu/vm_file_name.xml

33. Connect with VNC viewer securely
# ls -l /usr/share/doc | grep httpd
vncviewer -via student@server6 localhost:2
$ tar czvf home.tar.gz /home
cat >> some_file << _EOF

34. Shell config tool gropued like GUI firewall configurater.
system-config-firewall tui
/var/log/maillog
# renice -10 proc-id
IPtables input chain

35. Edit files with cat until the _EOF is found
#rpm -uvh [package name]
cat >> some_file << _EOF
yum install tigervnc-server
MailTo=student@server6.example.com

36. Backup a home directory on desktop6 to /tmp on server6
/etc/sysconfig/iptables
rsync /home root@server6.example.com:/tmp
2>&1
# vi /etc/inittab change - id:3:initdefault:

37. Local file copy of /home/test1.html to /var/www/html/test1.html
/etc/yum.repos.d
#iptables -D INPUT -p tcp --dport 21 -j accpet
# cat /var/log/messages | grep [Ff]ailed | less
cp /home/test1.html /var/www/html/test1.html

38. Query information files with RPM
#rpm -qi [package name]
system-config-firewall (Push the enable button and check the appropriate boxes. Check.)
IPtables forward chain
chkconfig httpd on

39. Persist FTP on boot
chkconfig vsftpd on
ln -s /pub /var/www/html/pub
chkconfig httpd on
/etc/vsftpd/vsftpd.conf rpm -ql vsftpd

40. Append add to the end of the IPtables rules. insert will put rule above the deny all rule.
yum update
insert as opposed to append
#rpm -uvh [package name]
/etc/yum.repos.d/

41. Send all debug level messages to /var/log/debug.log
*.debug /var/log/debug.log service rsyslog restart
tar xvzf /tmp/etc.tar.gz /etc
/var/www/html/
# star -xattr -H=exustar -c -f=home.star /home/

42. Set process priority with renice - -20 highest - 20 lowest - 0 is default
# vi /etc/inittab change - id:3:initdefault:
# renice -10 proc-id
#virsh list
# grep -i

43. Start GUI for Firewall
/etc/hosts
$ tar czvf home.tar.gz /home
system-config-firewall (Push the enable button and check the appropriate boxes. Check.)
#yum info [package name]

44. Restart ssh services
service sshd restart
tar cxtv
# star -xattr -H=exustar -c -f=home.star /home/
yum remove firefox4

45. Get more information on a package availale through yum
#yum info [package name]
# cat /var/log/messages | grep [Ff]ailed | less
chkconfig httpd on
rpm -qp pkg.rpm

46. FTP package used in RHEL 6
rpm -qc httpd
vsftpd
.spec
#rpm -qi [package name]

47. RPM package naming
yum install tigervnc-server
name-version-release.architecture.rpm
#yum remove [package name]
#iptables -I INPUT -p tcp --dport 21 -j Accept

48. Rpm upgrade package u upgrade v verbose h hash
#rpm -uvh [package name]
insert as opposed to append
lftp student@server6 httpd configuration /etc/httpd/conf/httpd.conf rpm -ql httpd
ssh-copy-id root@server6.example.com

49. Enable anonymous users - disable local accounts - and disable any uploads to the FTP server
/etc/vsftpd/vsftpd.conf rpm -ql vsftpd
service ntpd restart
chkconfig vsftpd on
$ tar xzvf home.tar.gz /home

50. tar options for file name - gzip - and bzip2
cp /home/test1.html /var/www/html/test1.html
tar fzj
chkconfig vsftpd on
updating the kernel