go-dev
-blog
-blog-server
-blogpb
- blog.proto
-other
-dart
我的项目中有一个类似的目录，当我运行以下命令时，blogpb我在该目录中创建.proto文件到dart目录：
protoc -I=. --dart_out=$DST_DIR $SRC_DIR/blogpb/blog.proto
// got : Could not make proto path relative: /blogpb/blog.proto: No such file or directory
protoc --dart_out=grpc:lib/src/generated -Iprotos greet/greetpb/greet.proto
// got : protos: warning: directory does not exist.
// Could not make proto path relative: greet/greetpb/greet.proto: No such file or directory
上面的错误命令是什么？以及如何为此创建generatedinto目录？dart