Linux local files are uploaded to the server
SCP/home/liujia/file. TXT [email protected]:1/user/liujia
Download the file from the server
[email protected]:/user/liujia/file1. TXT/home/liujia

The command
SCP [email protected]:/user/liujia// home/liujia
Cp not a regular file
The reason is that this is the equivalent of downloading folders, not files.
The solution is to add the parameter -r
SCP – r [email protected]:/user/liujia// home/liujia
That’s it