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shell - How do I find all files that do not begin with a given prefix in bash?

I have a bunch of files in a folder:

foo_1 
foo_2
foo_3
bar_1
bar_2
buzz_1
...

I want to find all the files that do not start with a given prefix and save the list to a text file. Here is an example for the files that do have a given prefix:

find bar_* > Positives.txt
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If you're doing subdirectories as well:

find . ! -name "bar_*"

Or, equivalently,

find . -not -name "*bar_*"

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