/usr/bin/utf8lookup is in uniutils 2.27-2build1.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 | #!/bin/sh
#This script provides a handy way to look up Unicode characters from
#the command line.
# Usage: utf8lookup <unicode codepoint as hex text without leading 0x>
# For example, the command:
# utf8lookup 0543
# will produce the output:
# UTF-32 name
# 000543 ARMENIAN CAPITAL LETTER CHEH
#
echo 0x$1 | # feed command-line argument to ascii2binary's stdin
ascii2binary -t ui | # convert text to unsigned integer
iconv -f utf32 -t utf8 | # convert utf-32 to utf-8 encoding
uniname -b -c -e -g # feed to uniname, suppressing byte and character offsets,
# UTF-8 encoding, and glyph
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