Reference: Non-Printable Characters List – DZone Web Dev
Non-printable characters on Linux, macOS, or Windows are characters that do not represent a symbol, character, or number that is part of the document’s text, but rather are used for things like character encoding. A full list of all non-printable characters along with their decimal and hexidecimal codes are shown below.
How to Find Non-Printable Characters in a File
If you need to see all nonprintable characters in a document, you can use
cat -v filename.txt in terminal to find them, where
filename.txt is the file you want to show. The contents of the file, along with the non-printable characters in caret notation will be shown in your terminal window.
For a full list of the caret notation for non-printable characters, see the list below.
Full Non-Printable Characters List
Below, find a list of all non-printable characters, along with their binary, decimal and hexadecimal codes. You can also find their escape sequence (used in many programming languages), and caret notation (used with
|Name||Binary||Decimal||Hexadecimal||Octal||Caret Notation||Escape Sequence|