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We will use query command, to determine the state of a node, event, meter.  An alternative to the query command would be to use the python apiAPI.

The general format is:

ecflow_client --query arg1 arg2 arg3

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1. Go back to the previous exercise where we finished adding a meter.
2. Edit the definition file or python to add the modifications. You should only need to add a task query.
3. create file query.ecf to call ecflow_client –query
4. Replace the suite
   python: python3 test.py ; python3 client.py
   text:      ecflow_client --suspend=/test   ; ecflow_client --replace=/test  test.def
5. Observe the tasks in ecflow_ui

6. Modify query.ecf, to use ecflow_client --query variable, and show this variable in the query label. 

   Note
   Although a variable is accessible in the script by using %VAR%, ecflow_client --query variable might be more useful in a an interactive shell or a different server

   
      

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