Just a simply note that shows how to convert CAJ files to PDF files (not guranteed that).

安装 mupdf (待会儿需要 mutool)

wget https://mupdf.com/downloads/archive/mupdf-1.22.2-source.tar.gz
tar xf mupdf-1.22.2-source.tar.gz
cd mupdf-1.22.2-source
sudo apt install libglu1-mesa-dev freeglut3-dev libx11-dev libxi-dev libxrandr-dev
make -j`nproc`
sudo make install
cd ..

安装 python 依赖

pip3 install -U pypdf2

下载 caj2pdf

git clone https://github.com/caj2pdf/caj2pdf
cd caj2pdf
./caj2pdf convert ./filename.caj -o output.pdf