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A dollar sign binding a pattern to the end of a line.
At the end of a regular expression the dollar sign matches the end of a line rather than a currency amount — the counterpart of the caret at the front.
POSIX defines the dollar sign at the end of a pattern as an anchor matching the null string at the end of a line.
Contexts: Software
An S-shaped curve crossed by one upright stroke running through it from above to below.
The same character. In a shell it also introduces a variable, and in a regular expression it anchors — neither has anything to do with money.
Both are used in software contexts.