It matches any one line of string that does not have only digit, space and dot(\x2e). If it has any character beside the aformentioned ones there is a match.

This regex capture only one of string that is a combination of number, dot and characters. It can also not have any number or dot, but must have at least one character

cat txt | sed 's/client_secret="[]"/client_secret="HEREHERE"/

Works for: 555-555-5555 (555)555-5555 (555) 555-5555 555 555 5555 5555555555...

Find Arabic letters and highlight the whole words.

Possible Formats: N8X 3T7 N8X 80021 80021-1234

Formats can be like : US: 80021 80021-4325 ...

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