Add sample to exclude file/directory.

Recursiveness.md

@@ -31,7 +31,7 @@ find /path/to/scripts -type f \( -name '*.sh' -o -name '*.bash' -o -name '*.ksh'
 
 To check files whose shebang indicate that they are sh/bash/ksh scripts:
 
-```
+```bash
 # POSIX
 find /path/to/scripts -type f -exec grep -Eq '^#!(.*/|.*env +)(sh|bash|ksh)' {} \; \
   | xargs shellcheck
@@ -42,3 +42,11 @@ find /path/to/scripts -type f -exec grep -Eq '^#!(.*/|.*env +)(sh|bash|ksh)' {}
 ```
 docker run --volume /path/to/scripts:/mnt koalaman/shellcheck-alpine sh -c "find /mnt -name '*.sh' | xargs shellcheck"
 ```
+
+## To exclude file/directory
+
+To exclude files or directories from the search(`find`) results use `! -path`. To exclude `vendor` directory for example:
+
+```sh
+find /path/to/scripts -type f \( -name '*.sh' \) ! -path '*/vendor/*' | xargs shellcheck -x -s sh
+```