dpns-rename - rename a DPNS file or directory in the name server
dpns-rename oldpath newpath
dpns-rename renames a DPNS file or directory in the name server.
This requires write permission in the parent directories.
If oldpath or newpath does not start with /, it is prefixed by the
content of the DPNS_HOME environment variable.
This program returns 0 if the operation was successful or >0 if the
LCG Grid Deployment Team