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# Syntax
scp <source> <destination>
# To copy a file from B to A while logged into B:
scp </path/to/file> <Username>@<Host A>:</path/to/destination>
# To copy a file from B to A while logged into A:
scp <Username>@<Host B>:</path/to/file> </path/to/destination>
# To copy a file from B to A remotely:
scp <Username>@<Host B>:</path/to/file> <Username>@<Host A>:</path/to/destination>
Sources: