FTP Server — vsftpd
In the course of embedded development, the teacher taught us how to selectively load the linux system to the Raspberry Pi, and let us familiarize ourselves with Linux and learn to use some packages to control the computer on the terminal.
I plan to use the linux system to be able to run vsftpd, and then allow external devices to log in with account passwords through ftp. And can browse, upload, download files.