usdedit

usdedit is a simple script that converts any single USD-readable file into its (temp) .usda ascii equivalent and brings the result up in your editor of choice, which is taken from the EDITOR environment variable. Upon quitting the editor, any changes to the temp file will be converted back to the original file’s format (assuming the FileFormatPlugin for the format allows writing), and the original file’s contents will be replaced with the edited contents.