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

A quick way given you have bash 4.2.25, is to simply use bash pattern matching to remove all .7z, but the ones having _.7z, like this:

touch a.7z b.7z c.7z d_.7z e_.7z f.txt
rm *[^_].7z