How to find files except given name?

Question

There is a directory containing the following files:

.
├── bla-bla-bla1.tar.7z
├── bla-bla-bla2.tar.7z
├── bla-bla-bla3.tar.7z
└── _bla-bla-bla_foo.tar.7z
         


        

Answer 1

It should be

 find . -name "*[^_].7z"