源代码目录

打印机需安装
java打印问题 打印缺失 Cannot run program "/usr/bin/lpr": java.io.IOException: error=2, No such file or directory
find / -name "lpr" //查找lpr
ln -s /usr/share/bash-completion/completions/lpr /usr/bin/lpr  //创建软连接
apt -y install cups-bsd //安装cups-bsd 替代lpr