ascii

This is a handy little utility that recognizes many different ways of
naming an ASCII character (hex, octal, binary, decimal, C escape, ISO
character table pair, slang names, and others) and prints out all the
equivalents.

The latest sources for this utility live at

        http://www.catb.org/~esr/ascii/

                                                        Eric S. Raymond
                                                        esr@thyrsus.com