Printable Charts

A lock lies on a range of bytes, it has two different kinds of owner, and it guards no byte at all

Nine bits in three triads, three special bits — and why r and x on a directory are different powers

main axis and cross axis · which property belongs to which

sign, exponent and significand: what actually sits in a float and what does not

10 shapes, and one algorithm drawn with them

four areas · the command that moves code between them

A leading dot and a slash disappear only in filename expansion: the same pattern “*” is seen by case, but not by expansion itself

seven questions, the same to both, and the document each answer is written in

The body reaches the command as a single word, and one quote in the delimiter decides whether it arrives as typed

ten methods per RFC 9110, 5789 and 10008: which are safe, which are idempotent, which can be retried

five classes · twenty codes you meet every day

Two kinds of delimiter: white ones merge into one, non-white ones each cut on their own — and the same value gives one field or four