Use scp To Transfer Files To and From OSG Connect¶
This tutorial assumes that you will be using a command line application for performing file transfers instead of a GUI-based application such as WinSCP.
We can transfer files to and from the OSG Connect login node using the
scp command. Note
scp is a counterpart to the secure shell
ssh, that allows for secure, encrypted file transfers between
systems using your ssh credentials.
scp, you will always need to specify both the source of the
content that you wish to copy and the destination of where you would like
the copy to end up. For example:
$ scp <source> <destination>
Files on remote systems (like an OSG Connect login node) are indicated using
Transfer Files To OSG Connect¶
Let's say you have a file you wish to transfer to OSG Connect named
Using the terminal application on your computer, navigate to the location of
Then use the following
scp command to tranfer
my_file.txt to your
/home on OSG Connect. Note
that you will not be logged into OSG Connect when you perform this step.
$ scp my_file.txt username@loginNN.osgconnect.net:/home/username/
Where NN is the specific number of your assigned login node (i.e.
Large files (>100MB in size) can be uploaded to your
/public directory also using
$ scp my_large_file.gz username@loginNN.osgconnect.net:/public/username/
Transfer Directories To OSG Connect¶
To copy directories using
scp, add the (recursive)
-r option to your scp command.
$ scp -r my_Dir username@loginNN.osgconnect.net:/home/username/
Transfer Files From OSG Connect¶
To transfer files from OSG Connect back to your laptop or desktop you can use the
scp as shown above,
but with the source being the copy that is located on OSG Connect:
$ scp username@loginNN.osgconnect.net:/home/username/my_file.txt ./
./ sets the destination of the copy to your current location on your computer
Transfer Files Between OSG Connect and Another Server¶
scp can be used to transfer files between OSG Connect and another server that you have
ssh access to. This means that files don't have to first be transferred to your
personal computer which can save a lot of time and effort! For example, to transfer
a file from another server and your OSG Connect login node
$ scp username@serverhostname:/path/to/my_file.txt username@loginNN.osgconnect.net:/home/username
Be sure to use the username assigned to you on the other server and to provide the full path on the other server to your file.