I am preparing a talk on software environmentalism (http://www.tudorgirba.com/blog/keynote-at-ecoop-2014) and I am looking for resources around the following issues:

- the amount of source code in the world

- the amount of time spent on reading code

- the development tools in use

- how people use custom tools (for example, unix/linux scripts)

- or other similar ones

Do you happen to know any pointers that go in this direction?

Cheers,

Doru
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