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