How to grep unicode character in command line

grep_unicode.md

How do I grep unicode characters using its code point?

For example, if we want to grep a(unicode code point is u+0041), we can use the following trick:

grep "$(printf '\u0041')" my_file.txt

References

• https://superuser.com/questions/808716/linux-shell-command-to-grep-unicode-character-zero-width-space-u200b
• https://unix.stackexchange.com/questions/19491/how-to-specify-characters-using-hexadecimal-codes-in-grep