[MacPorts] #47937: grads: /opt/local/bin/wgrib already exists and does not belong to a registered port

[MacPorts]

#47937: grads: /opt/local/bin/wgrib already exists and does not belong to a
registered port
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  Reporter:  kimi4896171@…  |      Owner:  takeshi@…
      Type:  defect         |     Status:  new
  Priority:  Normal         |  Milestone:
 Component:  ports          |    Version:  2.3.3
Resolution:                 |   Keywords:
      Port:  grads          |
----------------------------+-----------------------

Comment (by takeshi@…):

 Check the environment variables. You might have installed a GrADS binary
 installed and set the environment variables for it. See the
 [http://www.iges.org/grads/gadoc/gradcomdgrads.html documentation].

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Ticket URL: <https://trac.macports.org/ticket/47937#comment:4>
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