Difference between revisions of "HOWTO copy a file from the ifarm to home"
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(→2. Use the tunnel to copy the file) |
m (Marki moved page Copying files to home to HOWTO copy a file from the ifarm to home: Make the title appropriate for the HOWTO page.) |
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Latest revision as of 21:03, 9 April 2021
Let us assume that you want to copy the file
/cache/halld/RunPeriod-2017-01/analysis/ver44/tree_pi0pippimeta__B5_M7_M17/merged/tree_pi0pippimeta__B5_M7_M17_030648.root
from the ifarm to home. For this example we start with a shell variable definition to save typing:
file=/cache/halld/RunPeriod-2017-01/analysis/ver44/tree_pi0pippimeta__B5_M7_M17/merged/tree_pi0pippimeta__B5_M7_M17_030648.root
We will assume bash throughout. You will also need a port number, something random between 10000[?] and 65000[?]. We will choose
port=12345
The randomness is to avoid conflicts with other users. And let us assume your JLab username is
user=janedoe
1. Set up an ssh tunnel
ssh -t -L${port}:localhost:${port} $user@login.jlab.org ssh -t -L${port}:localhost:22 ifarm
you will have to type your JLab password twice (unless you are using an ssh agent). Leave the tunnel running.
2. Use the tunnel to copy the file
In a different terminal use the scp command
scp -P$port $user@localhost:$file .
to copy to the current working directory (note the "." at the end of the command). You will have to supply your JLab password.