SFTP/SCP
The SSH-based SCP and SFTP utilities can be used to transfer files to and from NCCS systems. Because these utilities can be slow, we recommend using them to transfer small numbers of smaller files.
Usage
Both SCP and SFTP are available on all NCCS systems and should be a part of each user’s environment.
For example, on a UNIX-based system, to transfer the file file
from your local system to your home directory on Phoenix as newfile
, do the following for each:
SCP
scp file userid@phoenix.ccs.ornl.gov:newfile
SFTP
sftp userid@phoenix.ccs.ornl.gov sftp> put file newfile sftp> bye
where userid
is your given NCCS user name.
Standard file transfer protocol (FTP) and remote copy (RCP) should not be used to transfer files to the NCCS high-performance computing (HPC) systems due to security concerns.
SCP works with NCCS systems only if your per-process initialization files produce no output. The means that .cshrc
or .kshrc
must not issue any commands that write to standard output. If you would like for this file to write to standard output for interactive sessions, you must edit the file so that it does so only for interactive sessions.
For ksh
, use the following template:
TTY=`/usr/bin/tty` if [ $? = 0 ]; then /usr/bin/echo "interactive stuff goes here" fi
For csh
, use the following template:
( /usr/bin/tty ) > /dev/null if ( $status == 0 ) then /usr/bin/echo "interactive stuff goes here" endif