Data at Purdue can be accessed from dcache.rcac.purdue.edu with a valid grid certificate. The
operation commands are as follows. To be able to use them, you should have a valid grid proxy.

Get data information:
 

srm-get-metadata srm://dcache.rcac.purdue.edu:8443
/srm/managerv1?SFN=/store/mc/2006/12/21/mc-physval-120-
SingleMuPlus-Pt100/0000/16C04DD5-B596-DB11-
802F-00096B005334.root

Create a user directory at dCache:
 

srmmkdir -2 srm://dcache.rcac.purdue.edu:8443
/srm/managerv2?SFN=/store/user/<username>/<directoryname>

Delete an empty user directory at dCache:

srmrmdir -2 srm://dcache.rcac.purdue.edu:8443/srm/managerv2?SFN=/store/user/<username>/<directoryname> 

Copy data from local to dCache:
 

srmcp -2 file:////tmp/test.root srm://dcache.rcac.purdue.
edu:8443/srm/managerv2?SFN=/store/user
/<username>/test.root

or 

srmcp -2 -protocols=gsiftp -debug=true
file:////tmp/test.root `curl 'http://t2.unl.edu/phedex/tfc/map
/T2_US_Purdue?lfn=/store/user/<username>
/test.root-srmv2&protocol=srmv2' 2>/dev/null`

Delete data from dcache (only apply to user data):
 

srmrm -2 srm://dcache.rcac.purdue.edu:
8443/srm/managerv2?SFN=/store/user/<username>
/test.root

List dcache data directory:
 

srmls -2 srm://dcache.rcac.purdue.edu:8443/srm/managerv2?SFN=/store
/user/<username>

 Copy data from castor to dCache:

lcg-cp --vo cms gsiftp://castorgrid.cern.ch/castor/cern.ch/user/(letter)/(UID)/test.root gsiftp://dcache-02.rcac.purdue.edu:2811/store/user/<username>/test.root

Copy data locally (no need of the grid proxy):
 

dccp dcap://dcache.rcac.purdue.edu:22125
/pnfs/rcac.purdue.edu/data/store/mc/2006/12/21
/mc-physval-120-SingleMuPlus-Pt100/0000/
16C04DD5-B596-DB11-802F-00096B005334.root /tmp/test.root