USDDIFF(1) User Commands USDDIFF(1) NAME usddiff - manual page for usddiff 26.08 DESCRIPTION usage: usddiff [-h] [-n] [-f] [-q] files [files ...] Compares two usd-readable files using a selected diff program. This is chosen by looking at the $USD_DIFF environment variable. If this is unset, it will consult the $DIFF environment variable. Lastly, if neither of these is set, it will try to use the canonical unix program, diff. This will relay the exit code of the selected diff program.When comparing two usdz files, each file contained in the package will be examined individually. The $USD_IMAGE_DIFF environment variable specifies a specific diff program for comparing image files. The $USD_IMAGE_DIFF_FORMATS environment variable specifies supported image formats using a "," separated list of file extensions. positional arguments: files The files to compare. These must be of the form DIR DIR, FILE... DIR, DIR FILE... or FILE FILE. options: -h, --help show this help message and exit -n, --noeffect Do not edit either file. -f, --flatten Fully compose both layers as Usd Stages and flatten into single layers. -q, --brief Do not return full results of diffs. Passes --brief to the diff command. usddiff 26.08 September 2026 USDDIFF(1)