Time for the book club review and discussion.

## Chapter 7

This chapter was captivating because it tackled aspects that I'm not
used to.
Here are some notes:

- The environment variables are cached in rc and for that reason you
need to start a new one so that they take effect. I'm not sure that's
very practical.

- The concept of namespace, using a name service, along with a translation
mechanism that resolves files/Chan that are stored on the file server
is pretty cool.
ns prints the current available namespaces, per process.
This is applied/passed when forking (flag RFNAMEG), and can be overriden
with Local to transfer the namespace to child processes.

- It's the 9p protocol that is used to talk with file servers

- The srv program is used to connect to a server and then creates a
file descriptor that will speak the appropriate protocol. It can then
be mounted.

- Bind is kind of like a more generic hardlink

- The /dev/drivers and device mounting conundrum, which is explained
with device names that start with #/ and that are omnipresent.

- Union mount, merging 2 directories in a bind and resolving conflict,
is something I've read about before.

## Chapter 8

This chapter was pretty uneventful, mostly because a lot of the shell examples
are familiar with Unix.

One thing to note, lists are like perl lists, flattened.

Another one is that single character concatenation is explained as
a subset/special case of the cross operator caret/^. I found that
interesting.