provide multiple input to calculate total usage

[danie-dejager]

Is your feature request related to a problem? Please describe.
I have client data stored in batches and with some bash I can get a list of directories where the data is. Ideally I would want to pass this list to gdu so it can give me a total used. Potentially appending each location to the existing file output.

→ gdu -npsa /root /home
Error: accepts at most 1 arg(s), received 2

Describe the solution you'd like
Ideally I would want to pass this list of different locations (containing many thousands of locations) to gdu so it can give me a total used.

Describe alternatives you've considered
Now I have to run gdu for each location, save the total and calculate the total at the end.

[dundee]

I will be probably a bit difficult to implement but it makes a lot of sense!