# duti > Set default applications for document types and URL schemes on macOS. > More information: . - Set Safari as the default handler for HTML documents: `duti -s {{com.apple.Safari}} {{public.html}} all` - Set VLC as the default viewer for files with `.m4v` extensions: `duti -s {{org.videolan.vlc}} {{m4v}} viewer` - Set Finder as the default handler for the ftp:// URL scheme: `duti -s {{com.apple.Finder}} "{{ftp}}"` - Display information about the default application for a given extension: `duti -x {{ext}}` - Display the default handler for a given UTI: `duti -d {{uti}}` - Display all handlers of a given UTI: `duti -l {{uti}}`