Linux list files recursively ignoring a pattern

Question

I have exactly the same problem as this post.

Only instead of finding all the .txt files, I want a list of all files that are not .txt files.

Something like

$ ls -LR | grep -v .java

Which definitely does not do what I want.

Answer 1

Use find as suggested in that post and negate the -name condition with ! to have the other way round:

find . -type f ! -name "*.txt"
#      ^^^^^^^ ^^^^^^^^^^^^^^^
#   just files        |
#              file names not ending with .txt