regular expression to exclude filetypes from find

When using find command in linux, one can add a -regex flag that uses emacs regualr expressions to match.

I want find to look for all files except .jar files and .ear files. what would be the regular expression in this case?

Thanks

Answer

You don’t need a regex here. You can use find with the -name and -not options:

find . -not -name "*.jar" -not -name "*.ear"

A more concise (but less readable) version of the above is:

find . ! ( -name "*.jar" -o -name "*.ear" )