REGEX Remove Space

Question

I want to creating regex to remove some matching string, the string is phone number

Example user input phone number like this:

+jfalkjfkl saj f62 81 78

Answer 1

Using PCRE regexes, you should be able to simply remove anything matching \D+. Example:

echo "+jfalkjfkl saj f62 81 7876 asdadad30 asasda36" | perl -pe 's/\D+//g'

prints:

628178763036