RabbitMQ Go教程日志。Printf无法写入磁盘文件？

I'm following the RabbitMQ tutorial via go. Here is the link: https://www.rabbitmq.com/tutorials/tutorial-four-go.html

when I run the following command to log message to file:

go run receive_logs_direct.go warning error>logs_from_rabbit.log

But the logs_from_rabbit.log file still empty.

What's wrong with it?

It seems your redirect is missing logs from the standard error output.

Try:

go run receive_logs_direct.go warning error >stdout.log 2>stderr.log

Or:

go run receive_logs_direct.go warning error 2>&1 >full.log