unichars is a simple tool for identifying unicode characters. Whether your
fonts can't display them, you need to distinguish between lookalike glyphs, or
you just want to know what characters you're looking at, 'unichars' can help.
With no arguments, unichars reads a single line of input, and tells you the
code point and name of each character in it.
Given filenames as arguments (or - for standard input), unichars displays
that same information for each character in each of the files.
$ unichars
Enter string: u𝗇ι̇ϲοⅾе
U+0075 LATIN SMALL LETTER U
U+1D5C7 MATHEMATICAL SANS-SERIF SMALL N
U+03B9 GREEK SMALL LETTER IOTA
U+0307 COMBINING DOT ABOVE
U+03F2 GREEK LUNATE SIGMA SYMBOL
U+03BF GREEK SMALL LETTER OMICRON
U+217E SMALL ROMAN NUMERAL FIVE HUNDRED
U+0435 CYRILLIC SMALL LETTER IE