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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. Send all debug level messages to /var/log/debug.log
#yum info [package name]
*.debug /var/log/debug.log service rsyslog restart
yum info firefox4
rsync -a /home/test1.html root@server6.example.com:/var/pub

2. Contains RPM database
#yum groupremove "group name"
2>&1
rpm --import [public key location]
/var/lib/rpm

3. fqdn
rsync -PHR /home/test1.html root@server6.example.com:/var/pub
#ip addr show
yum provides "*/sbin/sshd"
Fully Qualified Domain Name

4. Repos for yum
/etc/yum.repos.d
/etc/sysconfig/resolv.conf
#rpm -uvh [package name]
*.debug /var/log/debug.log service rsyslog restart

5. Grep with ignoring case
# grep -i
GUI menu system/administratrion/firewall
ssh-copy-id root@server6.example.com
tar cxtv

6. Email related messages log
/var/log/maillog
yum provides "*/sbin/sshd"
service ntpd restart
logwatch

7. Create a tar ball with gzip compression of the home dir
#yum install [package name]
cp /home/test1.html /var/www/html/test1.html
$ tar xzvf home.tar.gz /home
$ tar czvf home.tar.gz /home

8. Create a symbolic link to /pub on the FTP and name it pub
ln -s /pub /var/www/html/pub
updating the kernel
2>&1
/etc/sysconfig/iptables

9. File containing information to create rpm package - RPM packages contain these files: libraries or application - any documentation - any configuration files
.spec
tar cxtv
/etc/services
#virsh destroy domain-id

10. Get a list of package groups from yum
#yum grouplist
/var/log/cron
/etc/services
/var/lib/rpm

11. Location of repo's
rpm -ql vsftpd
/etc/yum.repos.d/
updating the kernel
cat >> some_file << _EOF

12. System config firewall
vsftpd restart
tar xvzf /tmp/etc.tar.gz /etc
GUI menu system/administratrion/firewall
/var/log/messages

13. Restart the ntpd service
# renice -10 proc-id
#iptables -F
service ntpd restart
/etc/yum.repos.d/

14. Restart ssh services
Fully Qualified Domain Name
service sshd restart
/etc/yum.repos.d/
rpm -q pkg.rpm --scripts

15. Remove a package with yum
#yum remove [package name]
# cat /var/log/messages | grep [Ff]ailed | less
#virsh list
/etc/vsftpd/vsftpd.conf rpm -ql vsftpd

16. Install a package named firefox4
vncpasswd
#rpm -qac [package name]
yum install firefox4
ln -s /pub /var/www/html/pub

17. Remote copy /home/test1.html to the /var/pub directory on server6 with progress - preserving hard links - and using relative path names
#yum grouplist
rpm -ql vsftpd
palimpsest
rsync -PHR /home/test1.html root@server6.example.com:/var/pub

18. List iptables
2>&1
yum update
/etc/yum.repos.d/
#iptables -L

19. Extract /tmp/etc.tar.gz to /etc
yum provides "*/sbin/sshd"
/etc/rsyslog.conf
#rpm -qad [package name]
tar xvzf /tmp/etc.tar.gz /etc

20. Set a VNC password
vncpasswd
#rpm -uvh [package name]
IPtables forward chain
#virsh destroy domain-id

21. Process packets coming into the system
name-version-release.architecture.rpm
#iptables -F
lftp student@server6 httpd configuration /etc/httpd/conf/httpd.conf rpm -ql httpd
IPtables input chain

22. Install the VNC server package
/etc/services
#rpm -qi [package name]
yum install tigervnc-server
/etc/sysconfig/resolv.conf

23. tar options for file name - gzip - and bzip2
rsync -a /home/test1.html root@server6.example.com:/var/pub
/etc/services
tar fzj
*.debug /var/log/debug.log service rsyslog restart

24. Persist the web server on boot
cp /home/test1.html /var/www/html/test1.html
#yum remove [package name]
chkconfig httpd on
/etc/sysconfig/iptables

25. Restart vnc and persist on boot
#rpm -ivh [package name]
service vncserver restart chkconfig vncserver on
Fully Qualified Domain Name
tar cxtv

26. FTP package used in RHEL 6
# star -xattr -H=exustar -c -f=home.star /home/
/etc/sysconfig/network
/etc/sysconfig/iptables
vsftpd

27. Grep for lines that do not match (-v)
$ tar czvf home.tar.gz /home
$ grep -v ^# /etc/nsswitch.conf
#iptables -L
/var/www/html/

28. Set process priority with renice - -20 highest - 20 lowest - 0 is default
yum info firefox4
#yum remove [package name]
name-version-release.architecture.rpm
# renice -10 proc-id

29. See the configuration files installed with a package named httpd
rsync -a /home/test1.html root@server6.example.com:/var/pub
#yum groupremove "group name"
rpm localinstall pkg.rpm --nogpgcheck
rpm -qc httpd

30. Kill a VM
$ grep -v ^# /etc/nsswitch.conf
rpm -qc httpd
#virsh destroy domain-id
# ls -l /usr/share/doc | grep httpd

31. Program to analyze standard log files and send a summary email to root
rhn_register
ln -s /pub /var/www/html/pub
cp /home/test1.html /var/www/html/test1.html
logwatch

32. Disks available for partitions
/dev
yum install tigervnc-server
#iptables -I INPUT -p tcp --dport 21 -j Accept
rhn_register

33. Sync ntp time with the instructor
rsync /home root@server6.example.com:/tmp
#iptables -L
lftp student@server6 httpd configuration /etc/httpd/conf/httpd.conf rpm -ql httpd
ntpdate -b instructor

34. Use lftp to connect
service ntpd restart
lftp student@server6 httpd configuration /etc/httpd/conf/httpd.conf rpm -ql httpd
#iptables -L
[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

35. Install the star compression tool create an archive with the star tool.
yum install firefox4
system-config-firewall tui
# star -xattr -H=exustar -c -f=home.star /home/
#rpm -uvh [package name]

36. Configuration file for system logs
vsftpd
/etc/rsyslog.conf
#iptables -L
tar xvzf /tmp/etc.tar.gz /etc

37. Uninstall a package group with yum
service vncserver restart chkconfig vncserver on
insert as opposed to append
#yum groupremove "group name"
#yum install [package name]

38. Rpm upgrade package u upgrade v verbose h hash
/var/log/messages
#rpm -uvh [package name]
yum update
yum info firefox4

39. Create a gzip-compressed backup of /etc in /tmp
#iptables -L
/etc/sysconfig/resolv.conf
system-config-firewall (Push the enable button and check the appropriate boxes. Check.)
tar czvf /tmp/etc.tar.gz /etc

40. Primary configuration of ssh
rpm --import [public key location]
/etc/ssh/sshd_config
tar cxtv
# renice -10 proc-id

41. Search for a package with firefox in the description
ssh-copy-id root@server6.example.com
chkconfig vsftpd on
yum install tigervnc-server
yum search firefox

42. Query all documentation with RPM
rsync /home/test1.html root@server6.example.com:/var/pub
/etc/ssh/sshd_config
#rpm -qad [package name]
/etc/sysconfig/network

43. Register on the RHN
tar xvzf /tmp/etc.tar.gz /etc
updating the kernel
rhn_register
#rpm -ivh [package name]

44. Append this to the /etc/rsyslog.conf to send mail to student@server6.example.com
#yum remove [package name]
service ntpd restart
MailTo=student@server6.example.com
tar cxtv

45. Generate SSH Keys
/var/log/secure
ssh-keygen
$ grep -v ^# /etc/nsswitch.conf
rsync -a /home/test1.html root@server6.example.com:/var/pub

46. Remote file copy /home/test1.html to the /var/pub directory on server6 while preserving metadata
system-config-firewall tui
#rpm -ivh [package name]
/var/www/html/
rsync -a /home/test1.html root@server6.example.com:/var/pub

47. List VMs
add/remove software GUI
#virsh list
chkconfig vsftpd on
updating the kernel

48. Backup a home directory on desktop6 to /tmp on server6
chkconfig vsftpd on
tar cxtv
rsync /home root@server6.example.com:/tmp
rsync -PHR /home/test1.html root@server6.example.com:/var/pub

49. Local host file (contains hostname). Can contain local system DNS.
ntpdate -b instructor
# virsh create /etc/libvert/qemu/vm_file_name.xml
insert as opposed to append
/etc/hosts

50. All messages sent at info priority or higher
#rpm -qa | grep [package name]
/etc/sysconfig/resolv.conf
/var/log/messages
rsync -PHR /home/test1.html root@server6.example.com:/var/pub