how to upload a local file to remote using ssh code example

Example 1: centos copy files ssh

scp <source> <destination>

#To copy a file from B to A while logged into B:
scp /path/to/file username@a:/path/to/destination

#To copy a file from B to A while logged into A:
scp username@b:/path/to/file /path/to/destination

Example 2: copy from remote to local

scp file.txt [email protected]:/remote/directory