remove files when name does NOT contain some words

Question

I am using Linux and intend to remove some files using shell.

I have some files in my folder, some filenames contain the word \"good\", others don\'t. For example:

Answer 1

This command should do what you you need:

ls -1 | grep -v 'good' | xargs rm -f

It will probably run faster than other commands, since it does not involve the use of a regex (which is slow, and unnecessary for such a simple operation).