I get this:
./pixelbox: line 1: version: command not found
./pixelbox: line 2: oid: command not found
size: '116377064': No such file
you have to install git lfs and git clone it, otherwise the files wont extract properly. I updated the readme to show that.
sudo apt install git git-lfs git lfs install git clone https://github.com/haonkrub/pixelbox_linux_build.git