duti

Set default applications for document types and URL schemes on macOS. More information: https://github.com/moretension/duti.

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}}