Last update: 02/27/2009
Users who transfer files between remote systems and NCAR supercomputers or the Data Analysis Cluster must use a secure method such as scp, sftp, or possibly in the near future, gridftp. Since the details vary somewhat on the various supercomputers or data analysis computers at NCAR, please see the documents specific to those computers for information. The following documents are particularly relevant in this regard:
sftp is an interactive file transfer program similar to FTP. sftp performs all operations over an encrypted SSH transport. It may also use many features of SSH, such as public key authentication and compression. sftp connects and logs into the specified host, then enters an interactive command mode.
From within sftp, all of the normal ftp commands are present. sftp does not support anonymous logins. A user account is required on the remote end.
For usage information, see the man page for sftp on the computer from which you are issuing the command.
The secure copy command (scp) works with secure shell (SSH). You must use scp to transfer files into and out of the UCAR security perimeter. You also use scp to transfer files within the security perimeter.
For usage information, see the man page for scp on the computer from which you are issuing the command.
Data moves to and from the MSS using the msrcp command. This command is available on CISL servers and some other servers at the various NCAR campuses in Boulder. Please use the MSSFTP system if you need to transfer data between the NCAR MSS and non-NCAR systems.
Note: The deprecated msread and mswrite commands still exist on some servers and in some API libraries. Older codes that use the MSS library may still function with these older API libraries. However, msread and mswrite are scheduled to be removed, so you should use msrcp for new codes and convert old codes to msrcp.
For more information about msrcp, see Reading or writing MSS files with msrcp or the msrcp man page on any of the CISL servers.
To perform unattended file transfers, see Access for unattended file transfers.
Overview of computing at NCAR - Table of contents
If you have questions about this document, please contact us via any of the methods (phone, email, ticket, or in person) described here: CISL Customer Support.
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