This week (and a few months ago) I learned…

octet sequence

An octet sequence is an 8-bit byte.

I ran into this phrase looking at RFCs. I thought, “Why not just say ‘1 byte’?” In the past, bytes were not of equal length, and even today, some bytes are bigger than 8-bits. (Thank you people of StackOverflow)

*Fun Fact: A nibble is half a byte (4-bits).

man

man is a unix command that will bring up the manual for other commands.

Try it: man cal

grep

It’s amazing. https://www.tutorialspoint.com/unix_commands/grep

control + R

If you’re on a Mac, use control + R to do a reverse search in your terminal.