log.txt

https://docs.omniverse.nvidia.com/isaacsim/latest/reference_assets.html

USD requires CMAKE 3.12; this package is available from Ubuntu 20.04



https://github.com/gazebosim/gz-usd

cd /usr/local
sudo git clone --depth 1 -b v21.11 https://github.com/PixarAnimationStudios/USD.git
sudo apt install libpyside2-dev python3-opengl cmake libglu1-mesa-dev freeglut3-dev mesa-common-dev

cd USD
sudo python3 build_scripts/build_usd.py --build-variant release --no-tests --no-examples --no-tutorials --no-docs --no-python /usr/local/USD

```
Success! To use USD, please ensure that you have:

    The following in your PATH environment variable:
    /usr/local/USD/bin
```


gedit ~/.bashrc 

export PATH=/usr/local/USD/bin:$PATH
export LD_LIBRARY_PATH=/usr/local/USD/lib:$LD_LIBRARY_PATH
export CMAKE_PREFIX_PATH=/usr/local/USD:$CMAKE_PREFIX_PATH
export alias sdf2usd="/home/kimsooyoung/Downloads/gz-usd/build/bin/sdf2usd"

https://github.com/rnanosaur/nanosaur_simulations/blob/9e774d4a90ff18d764b3924d8c6ce208721718fc/nanosaur_isaac_sim/scripts/usdconverter.sh

cd /home/kimsooyoung/Downloads/nanosaur_simulations

export SDF_PATH=/home/kimsooyoung/Downloads/nanosaur_simulations/nanosaur_worlds/models
export IGN_FILE_PATH=/home/kimsooyoung/Downloads/nanosaur_simulations/nanosaur_worlds/models 

Cache (i.e. $HOME/.ignition/fuel)

SDF_PATH="/home/kimsooyoung/Downloads/nanosaur_simulations/nanosaur_worlds/models" \
IGN_FILE_PATH="/home/kimsooyoung/Downloads/nanosaur_simulations/nanosaur_worlds/models" \
 sdf2usd /home/kimsooyoung/Downloads/nanosaur_simulations/nanosaur_worlds/worlds/office.sdf office.usda