I detail below how to make copies of files and directories using SCP from both remote host to local and vice versa, in all the examples I specify authentication using certificate with the -i option, if you want to use the user / password is to remove this option and the path of the certificate file. To copy directories use the -r option.
For those who use Windows as SO I use the command scp inside Cygwin (https://www.cygwin.com/).
The scheme of the command is:
scp options source destination
Both the source and the destination have a format:
If [username@host:] is not specified, this parameter refers to local, and if is specified reference to the remote host.
Copy file example from remote host to local:
scp -i cert email@example.com:/tmp/app1.log /home/01234567/app1.log
Copy file example from local to remote host:
scp -i cert /home/01234567/app1.log firstname.lastname@example.org:/tmp/app1.log
Copy directory example from remote host to local::
scp -r -i cert email@example.com:/tmp/vms /home/01234567/vms
Copy directory example from local to remote host:
scp -r -i cert /home/01234567/vms firstname.lastname@example.org:/tmp/vms