coreadm – core file administration

Coreadm utility is used to set various options for generating core on Solaris system.

Sometimes, core file is not generated for a process which has setid bit enabled. Use following command to enable the core generation for such processes –

coreadm -e proc-setid

Please see here for more options to use with coreadm.

Difference between paged pool and nonpaged pool memory

Windows divides the kernel mode address space into paged and nonpaged memory pools. The paged memory can be swapped out and nonpaged memory is never swapped out.

Device drivers are usually not paged. For example, interrupt routine must be in nonpaged memory because interrupt can occur anytime. Paged pool can be allocated and accessed at IRQL < DISPATCH_LEVEL.

For more information, please visit this blog.

FSUTIL – Create a file of specified size

Windows utility “fsutil” can be used to create a file of certain size.

Fsutil file createnew

For example:

fsutil file createnew C:\file_100MB.dat 104857600
will create a 100MB file (104,857,600B = 100MB) named “file_100MB.dat” in C drive.

Disable structure padding in C

Following is the way to disable structure padding using pragma in C.

#pragma pack(push, 1)
//Define your structure here
#pragma pack(pop)
//Structure padding is re enabled.

More information can be found at MSDN. GCC follows the same specifications.

Watch out

Ever been in the situation where you want to run the command continuously without writing a shell script for it.

Watch is used to run a command to run at regular intervals. The basic syntax of the command is

Bang bang!!!

One reason people hate using command line is if something goes wrong or has to rerun the command, they have to type it all over again. Some use up arrow instead of retyping. But here is bang command typed as (!) exclamation, for your rescue.

Fedora 12 installation hangs on Dell laptop

I was trying to install Fedora 12 on my system. I have Dell Vostro 1015 with 2 GB RAM. The installation hangs after running for some time. It does not hang at one particular place. I tried 3 or 4 times and every time it hanged at different places.

After going through their bug list, I found a bug about my problem. To see the bug information, go to bug.

They have given a work around which did not work for me but it did work for some people.

Update (01-Jul-2011):
This seems to be a known bug. Even, I have faced the same issue with FC14 also. Now, I am using Kubuntu and installed FC14 on Virtual Box in windows. So far so good for me. I wish they could resolve this issue.

Please see below link for the details on the bug here.

Critical security hole in Firefox 3.5

There has been a highly critical security hole found in recently released Firefox 3.5. The bug is in newly used Just-in-Time (JIT) JavaScript compiler.

Following are the excerpts from Mozilla blog.

Hello world!

Hi All,

I just came to know about this blog site. Thought of giving it a try. Basically, I got inspired by Shabir’s blog (click here).

I would be putting here some of tips and tricks from my day to day professional life. Hope it would be helpful for you guys.

Feedback are most welcome.

-Mukesh