Hi kristof,

when i executed the below line. i din't get what i suppose to
get...the message "hello, world"..

did i miss any steps
sunil at ubuntu:~/test/drive$ sudo insmod helloworld.ko


On Mon, Feb 11, 2013 at 4:34 PM, Kristof Provost [off-list ref] wrote:

On 2013-02-11 16:24:17 (+0530), sunil [off-list ref] wrote:

quoted

Have a look at this:

donno wats happening:

sunil at ubuntu:~/test/drive$ sudo rmmod helloworld
sunil at ubuntu:~/test/drive$ lsmod|grep hellow*
Binary file helloworld.ko matches
Binary file helloworld.o matches

This doesn't actually do what you seem to think it does.
You're not passing the 'hellow*' argument to grep. The 'hellow*' is
first expaned by your shell, so it probably turns that command line into
'lsmod | grep helloworld.c helloworld.o helloworld.ko'.
Try using 'lsmod | grep hellow' instead (i.e. without the *).

quoted

sunil at ubuntu:~/test/drive$ modprobe -r helloworld
FATAL: Module helloworld not found.

Obviously, because your previous command succeeded. The module is no
longer loaded.

Regards,
Kristof

PS: Please don't top-post.
PS 2: Please keep the mailing list in cc.

-- 

Regards,
Sunil A S