[solved] how to declare/delete/modify free properties non interactively?

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1

Hello,
I would like to modify, create or delete a free property in a non interactive way.

I tried with tango_admin without success, it is probably normal since the help of tango_admin does not seems to allow this use.

Thank you.

2

Hello Philippe
Free properties, by definition, are not related to a device (admin or not).
You must use Database class methods.

Regards
Pascal

3

If you want to get/set properties from linux shell you can use PyTango:

> MY_VALUE=hostname

> python -c "import PyTango;PyTango.Database().put_property('MyFreeProperty',{'HostName':'$MY_VALUE'})"

> YOUR_VALUE=$(python -c "import PyTango;print(PyTango.Database().get_property('MyFreeProperty','HostName').values()[0][0])"

> echo $YOUR_VALUE
  hostname

Fandango includes the “tango_property” script that simplifies a bit the second step (it tries to hint whether you search for device/dserver/starter/class/free properties in this order):


> tango_property MyFreeProperty HostName
  hostname
4

Hello,
thanks to both of you for your answers. :slight_smile:

edit: for other readers, you need to add a closing parenthesis to the following line:


YOUR_VALUE=$(python -c "import PyTango;print(PyTango.Database().get_property('MyFreeProperty','HostName').values()[0][0])")

and it works juste fine!