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User Level Threads
User level threads is created for light weight threads. It needs to be controlled, context switched and swapped by the process. To the Operating System it is only one process without any threads. Here is one implementation of it: q.h [c] #includ …
Service Engineer/System Administrator Interview Questions
This is not my code alone. It was the group effort of Vivek Ram, Cijo George, Sandeep Unni and mine during our epic preparation for Yahoo!. I am just putting it open for others who would be looking for this information. Convert all lower case to up …
Automatic Command Archive
The default command storing size of ubuntu is 500 commands. It stores the commands in home folder in the file “.bash_history” . The problem is 500 commands is too short of a size. One method is to increase the command size to a large value by changing th …
BSNL Dataone Auto Downloader
Bsnl(India) provides an account that has 2am to 8am unlimited download. It was not easy to wake up at 2am and switch on the computer and sleep again. So I tried to find a method to switch on the computer automatically at 2am and download and shutdown at 8a …
Simplest way to remove trailing zeros of decimal numbers
This is a simple method I found to remove or strip trailing zeros of a decimal number. The function accepts the decimal number and return the trimmed value back. It removes all the redundant zeros in the number after the decimal point and if no number othe …
Web page Performance for a Blog – Part 1
I have always under the notion that page performance for big websites or websites that have a sole server and various resources like CDN and load balancers. So I wanted to know if this is true. I set out to try web page performance my blog. I just wanted t …
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