There are no Alt codes for Linux. But! You are still able to write symbols. And you still can do it straight from keyboard. Use Unicode codes. You'll even be able to type characters far beyond good-old ASCII encoding that alt codes can give. You can write Unicode text characters in this way.
How to write text symbols on Linux
Sequence you have to make:
- Hold down Ctrl+Shift+U.
Simultaneously press <Ctrl>, <Shift> and <U> keys.
- Release "U" key.
- Enter Unicode symbol's hex code.
Enter hexadecimal (base 16) code of symbol you want to type. Remember, that you need to do that with <Ctrl> and <Shift> keys still held down.
You can find all Unicode codes on the official site.
Next note is taken from some official Linux documentation.
In addition to the table-driven sequences, we allow Unicode hex codes to be entered. The method chosen here is similar to the
one recommended in ISO 14755, but not exactly the same, since we don't want to steal 16 valuable key combinations.
A hex Unicode sequence must be started with Ctrl-Shift-U, followed by a sequence of hex digits entered with Ctrl-Shift still held.
Releasing one of the modifiers or pressing space while the modifiers are still held commits the character. It is possible to erase
digits using backspace.
As an extension to the above, we also allow to start the sequence with Ctrl-Shift-U, then release the modifiers before typing any
digits, and enter the digits without modifiers.