StaticSection Downloading Files

File download from the 4DN data portal now requiresauthentication, even if the file is public. Accounts can becreated by anyone, including those not part of the 4DNNetwork; for more information on account creation, see the[Account Creation](/help/user-guide/account-creation) page.Files can be downloaded from the web portal after loggingin, as usual; for file download from the command line, theprocess is described below.

First you need to create a new access key, if you don't havean access key already. Note that access keys created forJupyterhub can't be used for the rest of the portal.

To create a new access key, first log in to the data portal,then click on your account in the upper right and click onProfile from the dropdown menu. There will be a button nearthe bottom of the page to add an access key. Save the keyand secret; typically this is done by creating a file inyour home directory called keypairs.json with thefollowing contents/format (replacing the x’s with theappropriate key and secret, of course):

{
  "default": {
      "key": "XXXXXXXX",
      "secret": "xxxxxxxxxxxxxxxx",
      "server": "https://data.4dnucleome.org"
  }
}

Once the access key is created and stored, the file can bedownloaded via curl with the following command:

curl -O -L --user <key>:<secret> <download-url>

For more information on file downloads see this page