You need the files (well, it is that simple, really…)
The files you wish to retrieve can be either on a fixed disk (USB key, external harddrive, CD, etc.) or, as more commonly occurring, on a machine accessible through the network.
In the first case, you simply need the media itself, and for network access, you need a login (and for the sake of data security, I suppose and strongly suggest this to be a secure shell, aka SSH, account).
On the remote network node, the SSH server (sshd) must be running, and the Linux/Unix/MacOSX tar command must be available. For Windows-based servers, I assume that comparable solutions can be found.
Remember: on the local host it is of course best to have a suitable project folder structure before you perform the actual data import!
If your machine also supports the tar command, the easiest way to copy data from a remote node is by
Then you enter the command (please replace items in ALL CAPS with whatever you need in your setup, and leave out optional parts within square brackets–[ and ]!):
ssh [-p SSH_SERVER_PORT] REMOTEUSER@REMOTEHOST "cd /FOLDER/WHERE/DATA/IS/STORED ; tar -cf - REMOTE_FOLDER_NAME [REMOTE_FOLDER_NAME2 ...]" | tar -xvf -
Here's one exemplary version:
cd /Volumes/CHIP_project/Imaging/Subjects ssh firstname.lastname@example.org "cd /import/projects_a_to_d/CHIP ; tar -cf - CHIP23_WT1956 CHIP24_RM1988" | tar -xvf -
This will change into the local folder where the CHIP project is stored, then ask for the password of user neurodata on host fmri.brainland.org, and then transfer the TAR-archived stream of two subjects (CHIP23 and CHIP24) via secure channel to the local host where it is un-tarred on the fly.