How to output non-number lines with grep?

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There is a small but significant difference:
grep '[^0-9,. ]' prints lines that have a bad character
grep -v '[0-9,. ]' prints lines that do not have a good character (i.e. all bad)

Last edited by MadeInGermany; 1 Week Ago at 03:16 PM.. Reason: A closing tick was missing
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