regex for number and letters
let regex = /[^A-Za-z0-9]+/regex for numbers
Regex regex = new Regex(@"^\d$");regex match numbers and special characters
echo %H1E2L+L#O! | sed 's/[^A-Z!]//g' #replaces number and special
characters which aren't ! or an uppercase letter A-ZCopyright © 2021 Codeinu
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