Kernel Bench

Kernel News and How To

I just got a new laptop and upgraded from 9.04 to 9.10 at the same time. So I don’t know if it’s my new wireless card (Broadcom BCM4312) or the new version of ubuntu, but for some reason I have to reinstall the wireless driver every single time I boot into ubuntu. I noticed several people said they had to manually install wireless drivers with ubuntu before it would work, and I did, but it disappears every time. I don’t understand it. In the installation process, I had to remove several other drivers (b43, ssb, and wl) to make it work – sometimes these come back even though I added them to the blacklist and sometimes they don’t come back but I *still* have to reinstall the driver. Needless to say it’s really annoying having to do this every time I boot into ubuntu – how do I fix this?

The initial installation process:
lsmod | grep "b43\|ssb\|wl"
rmmod wl
rmmod ssb
rmmod b43
echo "blacklist ssb" >> /etc/modprobe.d/blacklist.conf
echo "blacklist b43" >> /etc/modprobe.d/blacklist.conf
make clean
make
modprobe lib80211
Insmod wl.ko
And, yes, the installation process was done with root privileges, and it worked fine – it just doesn’t stick. :(

Here is the Official Ubuntu Wireless Documentation

Troubleshooting/Howto/General
https://help.ubuntu.com/community/WifiDocs/WiFiHowTo

LUg.

16 Which characteristic typifies robustness in a server system?

the ability to support extra video adapters and monitors
the ability to provide multiple remote access connections
the ability to survive the failure of one or more components and continue functioning
the ability to support redundant backup systems

17 Where does the address http://127.0.0.1 point?

to the closest web server
to the local host
to the nearest DNS server
to the local intranet

18 A module needs to be loaded. However, confirmation that the Linux kernel can load the module is important. Which of the following options of the Insmod program will accomplish this task?

-s
-p
-f
-k

19 When setting up a hard disk, what are the three possible types of partitions?

primary, secondary, and logical
primary, logical, and extended
C, D, and E
boot, program, and data

20 Which device is used to check for broadcasts, collisions, usage levels, and errors on an Ethernet network?

oscilloscope
LAN meter
TDR
cable tester

21 In Linux, which symbol represents the root directory?

*
/
#
\

22 What are the default names of the administrative accounts on a Windows and UNIX NOS, respectively?

root, Administrator
Admin, root
Administrator, root
root, Admin

23 What is the most desirable method of documenting Linux system configurations and changes?

an electronic logbook
a handwritten logbook
a tar file of the /etc directory
a tar file of the init config

24 Why is it important to install X Windows on all Linux workstations?

The CLI is unavailable for users on a client workstation.
It is required for network access.
Users are not familiar with the CLI.
Almost every workstation program requires X Window in order to run.

25 Which list specifies the items needed to set up email for Linux?

mail user agent, mailbox, mailbox protocol
transport protocol, mail user agent, mail transfer agent
mailbox protocol, mail user agent, transport protocol
mail transfer agent, mail protocol, mail user agent

26 Which list best describes the main features to consider when selecting a NOS?

manufacturer, NIC, security, scalability, performance
performance, management/monitoring tools, security, scalability, and robustness
scalability, management tools, size, NIC, BUS type
size, performance, security, bus architecture, scalability

27 You have decided to install your new Linux distribution by using the bootable CD that came with it. What must be configured before you can boot from the CD?

CMOS
NVRAM
BIOS
Hard drive

28 What is the main Internet protocol used for creating a connection with a remote computer?

FTP
SNMP
IMAP
Telnet

29 What is the physical topology when all the computers in a network connect to a central point?

point-to-point
star
ring
bus

30 In Windows 2000 Device Manager, what does a question mark in a yellow circle next to a device indicate?

The device does not physically exist.
The device drivers are not installed.
The device is not compatible with Windows 2000.
The device is not supported.

Admittedly I know enough about Linux to be dangerous. But I will take a shot at these.

16) The ability to survive failure of one or more components and continue functioning

17) The local host

18) -p

19)Primary, Locical, Extended

20)Lan Meter

21) #

22) Administrator, Root

23) Tar file in etc

24) Users are not familiar with the CLI

25) mailbox protocol, mail user agent, transport protocol

26) performance, management/monitoring tools, security, scalability, and robustness

27) BIOS

28)Telenet

29) star

30)The device drivers are not installed

http://www.pldx.com/movie/44/Assassin/ MY NEW MOVIE!

Introducing some insurgency classes. Feel free to comment and rate.

Please watch in HD!

KITS: RPG-7, Grenadier, Engineer and Sapper

Enjoy…
-Keisari
_____________________________
HL2 mod ins Insmod insurgency frag movie kits rpg-7 engineer war iraq sony vegas gameplay
_____________________________
Quakenet #suami.ins Finnish insurgency community

Duration : 0:7:10

Read the rest of this entry »

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http://www.pldx.com/movie/44/Assassin/ MY NEW MOVIE!

Introducing some insurgency classes. Feel free to comment and rate.

Please watch in HD!

KITS: RPG-7, Grenadier, Engineer and Sapper

Enjoy…
-Keisari
_____________________________
HL2 mod ins Insmod insurgency frag movie kits rpg-7 engineer war iraq sony vegas gameplay
_____________________________
Quakenet #suami.ins Finnish insurgency community

Duration : 0:7:10

Read the rest of this entry »

Technorati Tags: , , , , , , , , , , , , ,

i logged in as ’su’ ..
the typed .
/sbin/Insmod modulename.o
but got error no -1 ..error inserting
INVALID MODULE FORMAT

also is there any command to convert the *.C or *.h files into the *.o files ..

i think i got to get "this" *.o file by compiling …

Yes, you probably will have to Compile, but not just the module, the whole kernel. It is a long, involved, critical process. The first thing to do is find a site for your particular Linux distribution, since they all use slightly different tools to do this. Next, search out a few articles or a good how-to on recompiling the kernel with module support. Then double check everything, *BACK UP EVERYTHING IMPORTANT* and do the procedure step by step verbatim. Once you are familiar with it, you can relax a bit, but *NEVER WORK ON CRITICAL SYSTEM SOFTWARE* without *BACKING EVERYTHING UP!* I hope this helps you out, excuse the emphasis, but I don’t want the blame for not saying what may go wrong should it bomb out on you. If at first you don’t succeed, you’re about average. (Better than average, the kernel worked after the third time;)

I have an exam this week and the review contained 200 exam prep questions. I have answered and worked my A. off on the and these are the 25 out of 200 I couldn’t figure out. They may seem remediale to some of you but I am asking to please help me with these last few so I can study the correct answers thanks.

1.Which of the following are power management protocols?
A)ACPI
B)PPP
C)SMTP
D)APM

2. Which of the following would you want to remove from a system that would serve solely as a firewall?(Choose all that apply.)
A)init
B)Telnet client
C)Linux Kernel
D)Apache server

3. Which tool would you use to setup a firewall on a Linux system?
A)Apache
B)iptables
C)wall
D)TCP wrappers

4. What is the intended purpose of the rc.local or boot.local startup script?
A)Sets system time zone and language defaults
B)Holds startup commands for its specific computer
C)Displays startup messages
D)Verifies that all other startup scripts are operating correctly

5. Which of the following protocols can help with configuration of SCSI devices?
A)SCAM
B)SMB
C)ASPI
D)ATAPI

6. Which of the following is not a responsibility of lpd?
A)Maintaining printer queues
B)Accepting print jobs from remote machines
C)Informing applications of printer’s capabilities
D)Sending data to printers

7. Which of the following would show the contents of a tarball, including size and time stamps?
A)tar xzf
B)tar tzf
C)tar tvzf
D)tar x

8. Which of the following does an ethernet switch allow but a hub does not?
A)100Mbps operation
B)Linking more than five computers
C)Full duplex operation
D)Use with 10 Base 5 cabling

9. What types of devices may be attached via the USB port?(Choose all that apply)
A)Keyboards
B)Modems
C)RAM
D)Mouse

10. How would you direct the output of the uptime command to a file called uptimestats.txt?
A)echo uptimestats.txt
B)uptime > uptimestats.txt
C)uptime | uptimestats.txt
D)uptime < uptimestats.txt

11. What role does BIND fill?
A)Allows programs to use dynamic library files
B)Translates between names and IP addresses
C)Ties together POP and SMTP servers
D)Binds and IP address to a network interface

12. You think that a router between you and a server is preventing access, which command would you use to narrow down where the problem is?
A)nslookup
B)ping
C)traceroute
D)netstat

13. Which of the following when typed in Vi’s command mode, saves the file and quits the program?
A):rq
B):wq
C):rp
D):we

14.Where may the Linux root(/) partition reside?
A)On a primary or logical partition
B)On a logical partition only
C)On a primary partition only
D)On a partition that falls below the 1,024th cylinder

15. Where in a network may a network firewall reside?(Choose all that apply.)
A)In the walls between important offices
B)On an individual computer
C)In a router between network segments
D)In expensive network cables

16. Which of the following commands would provide information on programs that are consuming too much CPU time?
A)cat /proc/cpuinfo
B)df
C)top
D)uptime

17. Which of the following commands would allow you to view the last few lines of a file?
A)lastlines
B)bash
C)cp
D)tail

18. Which tool can you use to measure a hard disks speed on a Linux machine?
A)fdisk
B)e2fsck
C)speedtest
D)hdparm

19. Which of the following may be used to create a swap partition?(Choose all that apply)
A)dd
B)mknod
C)Linux fdisk
D)PartitionMagic

20. Which of the following commands will install an RPM package?
A)rpm -Uvh
B)rpm -i
C)rpm -U
D)rpm -e

21. Which of the following is true of public domain and open source software?
A)They’re the same thing
B)Both allow free distribution of software
C)Represent opposing philosophies
D)They can not legally appear on the same distribution medium

22. Under which of the following circumstances might you need to edit the /etc/fstab file?
A)A hard disk has been added to the computer
B)A zip disk has been added into the zip drive
C)System performs a disk check and reports no errors
D)/boot/grub/menu.lst boot options has been changed

23. What tool can diagnose and correct many common Linux filesystem problems?
A)mkfs
B)fsck
C)chkdsk
D)scandisk

24. Which programs can be used to load a module?(Choose all that apply)
A)Insmod
B)rmmod
C)modprobe
D)depmod

25. Which of the following directories must reside on its own partition.
A)/boot
B)/
C)/home
D)None, it’s optional for all directories

I already answered this question. Dont post twice

I have an exam this week and the review contained 200 exam prep questions. I have answered and worked my A. off on the and these are the 25 out of 200 I couldn’t figure out. They may seem remediale to some of you but I am asking to please help me with these last few so I can study the correct answers thanks.

1.Which of the following are power management protocols?
A)ACPI
B)PPP
C)SMTP
D)APM

2. Which of the following would you want to remove from a system that would serve solely as a firewall?(Choose all that apply.)
A)init
B)Telnet client
C)Linux Kernel
D)Apache server

3. Which tool would you use to setup a firewall on a Linux system?
A)Apache
B)iptables
C)wall
D)TCP wrappers

4. What is the intended purpose of the rc.local or boot.local startup script?
A)Sets system time zone and language defaults
B)Holds startup commands for its specific computer
C)Displays startup messages
D)Verifies that all other startup scripts are operating correctly

5. Which of the following protocols can help with configuration of SCSI devices?
A)SCAM
B)SMB
C)ASPI
D)ATAPI

6. Which of the following is not a responsibility of lpd?
A)Maintaining printer queues
B)Accepting print jobs from remote machines
C)Informing applications of printer’s capabilities
D)Sending data to printers

7. Which of the following would show the contents of a tarball, including size and time stamps?
A)tar xzf
B)tar tzf
C)tar tvzf
D)tar x

8. Which of the following does an ethernet switch allow but a hub does not?
A)100Mbps operation
B)Linking more than five computers
C)Full duplex operation
D)Use with 10 Base 5 cabling

9. What types of devices may be attached via the USB port?(Choose all that apply)
A)Keyboards
B)Modems
C)RAM
D)Mouse

10. How would you direct the output of the uptime command to a file called uptimestats.txt?
A)echo uptimestats.txt
B)uptime > uptimestats.txt
C)uptime | uptimestats.txt
D)uptime < uptimestats.txt

11. What role does BIND fill?
A)Allows programs to use dynamic library files
B)Translates between names and IP addresses
C)Ties together POP and SMTP servers
D)Binds and IP address to a network interface

12. You think that a router between you and a server is preventing access, which command would you use to narrow down where the problem is?
A)nslookup
B)ping
C)traceroute
D)netstat

13. Which of the following when typed in Vi’s command mode, saves the file and quits the program?
A):rq
B):wq
C):rp
D):we

14.Where may the Linux root(/) partition reside?
A)On a primary or logical partition
B)On a logical partition only
C)On a primary partition only
D)On a partition that falls below the 1,024th cylinder

15. Where in a network may a network firewall reside?(Choose all that apply.)
A)In the walls between important offices
B)On an individual computer
C)In a router between network segments
D)In expensive network cables

16. Which of the following commands would provide information on programs that are consuming too much CPU time?
A)cat /proc/cpuinfo
B)df
C)top
D)uptime

17. Which of the following commands would allow you to view the last few lines of a file?
A)lastlines
B)bash
C)cp
D)tail

18. Which tool can you use to measure a hard disks speed on a Linux machine?
A)fdisk
B)e2fsck
C)speedtest
D)hdparm

19. Which of the following may be used to create a swap partition?(Choose all that apply)
A)dd
B)mknod
C)Linux fdisk
D)PartitionMagic

20. Which of the following commands will install an RPM package?
A)rpm -Uvh
B)rpm -i
C)rpm -U
D)rpm -e

21. Which of the following is true of public domain and open source software?
A)They’re the same thing
B)Both allow free distribution of software
C)Represent opposing philosophies
D)They can not legally appear on the same distribution medium

22. Under which of the following circumstances might you need to edit the /etc/fstab file?
A)A hard disk has been added to the computer
B)A zip disk has been added into the zip drive
C)System performs a disk check and reports no errors
D)/boot/grub/menu.lst boot options has been changed

23. What tool can diagnose and correct many common Linux filesystem problems?
A)mkfs
B)fsck
C)chkdsk
D)scandisk

24. Which programs can be used to load a module?(Choose all that apply)
A)Insmod
B)rmmod
C)modprobe
D)depmod

25. Which of the following directories must reside on its own partition.
A)/boot
B)/
C)/home
D)None, it’s optional for all directories

I already answered this question. Dont post twice

Insmod.net

Duration : 0:0:21

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Insmod.net

Duration : 0:0:21

Read the rest of this entry »

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I have an exam this week and the review contained 200 exam prep questions. I have answered and worked my A. off on the and these are the 25 out of 200 I couldn’t figure out. They may seem remedial to some of you but I am asking to please help me with these last few so I can study the correct answers thanks.

6. Which of the following is not a responsibility of lpd?
A)Maintaining printer queues
B)Accepting print jobs from remote machines
C)Informing applications of printer’s capabilities
D)Sending data to printers

14.Where may the Linux root(/) partition reside?
A)On a primary or logical partition
B)On a logical partition only
C)On a primary partition only
D)On a partition that falls below the 1,024th cylinder

19. Which of the following may be used to create a swap partition?(Choose all that apply)
A)dd
B)mknod
C)Linux fdisk
D)PartitionMagic

24. Which programs can be used to load a module?(Choose all that apply)
A)Insmod
B)rmmod
C)modprobe
D)depmod

25. Which of the following directories must reside on its own partition.
A)/boot
B)/
C)/home
D)None, it’s optional for all directories

6) C
14) D
19) C, D
24) A, D
25) B