When you try to transfer a huge file over
ssh connection with
scp, it may happen that the transfer interrupts (typically during holidays, when only low bandwidth internet is available). It is not possible to resume the download with the
scp command. Hopefully
rsync can come to rescue, and can be used to avoid redo the download from scratch (which may fail again for the very same reasons). Try this:
~$ rsync --partial --progress user@hostname:/full/path/to/remote/file file
Obviously the same trick can apply for an upload (just need to reverse the positions of the last two arguments).