How do I type carriage return?

Hold Alt and type 013 on the numpad.

In Linux, your keyboard will send carriage return if you type Ctrl-M, linefeed when you type Ctrl-J, and backspace when you type Ctrl-H. Can't say with Windows, since you can be typing into so many different kinds of text-input controls, including a console window.

In linux, backspace is Ctrl+H, carriage return is Ctrl+M

If you want to insert a literal carriage return/backspace, you must quote it. Quoting is program-specific, but usually (or at least in bash) Ctrl+V quotes the next character. Other programs have different quoting mechanism, e.g. Ctrl+Q in emacs or Meta+V in nano

Therefore:

• To insert a carriage return in bash, you would press Ctrl+V then Ctrl+M
• To insert a backspace in nano you would press Meta+V then Ctrl+H
• To insert a carriage return in emacs, you would press Ctrl+Q then Ctrl+M

Edit: To insert another control character, look in this table in the first column. For example, to type an escape character you would press ^[ (Ctrl+[)