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

Another approach is to use an additional, negated primary with find:

 find /backups/ -name "*.7z"  ! -name '_.7z' -type f -mtime +180 -delete

The simple regex in the other answers is better for your use case, but this demonstrates a more general approach using the ! operator available to find.