anchor.diff:      gpadmin@gpmaster$ pxf version
       ```
   
  +3. Identify the file system location of the `$PXF_CONF` setting in your PXF 5.x PXF installation; you might need this later. If you are unsure of the location, you can find the value in `pxf-env-default.sh`.
  +
   2. Stop PXF on each segment host as described in [Stopping PXF](../../pxf/5-15/cfginitstart_pxf.html#stop_pxf).
   
   3. Upgrade to the new version of Greenplum Database and then continue your PXF upgrade with [Step 2: Upgrading PXF](#pxfup).
   
   
  -## <a id="pxfup"></a>Step 2: Upgrading PXF
  +## <a id="pxfup"></a>Step 2: Registering or Upgrading PXF
   
   After you upgrade to the new version of Greenplum Database, perform the following procedure to upgrade and configure the *PXF.to* software:
   
  
positive.code:     $ ssh gpadmin@<gpmaster>
      ```
  
  2. If you installed the PXF `rpm` on your Greenplum 6 hosts:
     
      1. Copy the PXF extension files from the PXF installation directory to the new Greenplum 6 install directory:
  
  
negative.code: If you are using PXF in your current Greenplum Database 6.x installation, you must perform some PXF upgrade actions when you upgrade to a newer version of Greenplum Database 6.x.
  
  The PXF upgrade procedure describes how to upgrade PXF in your Greenplum Database installation. This procedure uses *PXF.from* to refer to your currently-installed PXF version and *PXF.to* to refer to the PXF version installed when you upgrade to the new version of Greenplum Database.
  
  **Note**: if you are planning to upgrade PXF but not as part of a Greenplum Database upgrade, refer to the [PXF Documentation](../../pxf/5-15/upgrade_pxf_rpm.html)
  
  The PXF upgrade procedure has two parts. You perform one procedure before, and one procedure after, you upgrade to a new version of Greenplum Database:
  
  