command: scp
upload files to remote server and download files from remote server to local.
-P port
-v verbose
-4 use IPV4
-6 use IPV6
upload file to remote server
scp -P 4275 /home/space/music/1.mp3 [email protected]:/root/musics
upload folder to remote server
scp -P 4275 /home/space/music/ [email protected]:/root/musics/
download file from remote server
scp -P 4275 [email protected]:/root/musics/1.mp3 /home/space/musics