One of the downsides to living in the age of the search engine is that many of us do not know how to find documentation in the place it is supposed to be. Sometimes, we waste much time and bandwidth trying to find information that is available locally. Two such examples from my own experience are listed below:

1) OPERATOR(7). I can't count the number of times I have done a Google search trying to remember if a '&&' had higher precedence than a '||', or some similar question....

I wrote my first program in x86_64 assembly, learning from the AMD and GAS manuals. It is a text-based implementation of the old sliding puzzle game Fifteen:

https://frigidcode.com/code/fifteen/

Requires GCC to compile and a 64-bit OS to run.

Interestingly,the Copyright Term Extension Act of 1998 (also termed the "Mickey Mouse Protection Act") which extended copyright by 20 years, was named after Sonny Bono:

Sonny Bono Copyright Term Extension Act

He didn't actually get the bill passed, but it was named in memory of him. Reportedly, it was his opinion that copyright should last forever. But the CTEA bill compromised with a "mere" twenty year extension.

Sigh... just imagine...

There is an interesting thing about the way file deletion works in POSIX systems like Linux: When you call a command like "rm" on a file, ultimately you are calling the unlink() function on that file. the unlink() function does indeed remove the file name from the file system; however, the actual file itself is not removed from the file system until the last open file descriptor to that file is closed. (see UNLINK(2))

This means that, effectively, you can keep any file you...

Some interesting about ASCII, when it is represented as bytes in a binary system: (taken from Art of Assembly Language):

1) All alphabetic characters in standard ASCII can be converted to lowercase or uppercase simply by toggling the fifth bit (the first bit is bit zero). E.g.:

2) you can obtain the numeric equivalent of any of the numeric characters by subtracting 0x30 from the ASCII value.

3) Bits five...