Monthly Archives: March 2016

Why is the GNU software manual so hard to read?

By | March 11, 2016

I was researching on  what “dnl” meant within a file and my Google search showed results from Thinking this was the authoritative source, upon reading, I couldn’t for the life of me understand it. After searching some more, it was explained very clearly and succinctly at Stack Overflow of all places. In, lines commented with… Read More »

How to view va_list variables via gdb

By | March 7, 2016

Viewing variable values via gdb of a va_list is not as straight forward as gdb> p myvar. It requires a few extra steps not only in execution but in understanding. Read on if you want to know how va_* works and how to view the underlying variables. Step 1: The first step is to understand… Read More »

How 59 days was calculated from the Mastering Bitcoin book?

By | March 4, 2016

For some reason I was re-reading a particular section in a book called Mastering Bitcoin by Andreas M. Antonopoulos ( and came across this paragraph: This means that a valid block for height 277,316 is one that has a block header hash that is less than the target. In binary that number would have more than the… Read More »