[Pipe and Folters] Missing explanation how to run the interactive shell.

[soerenPeters]

In chapter Pipe and Filters - Section - Why Isn't it Doing Anything?:

The section explains why the incomplete command (wc -l) apparently does nothing and waits for further input. According to the explanation, this can then be terminated with CTRL C. So far so true.

I was wondering if it wouldn't be good to mention here how to provide interactive input and send it with CTRL - D properly.

[bkmgit]

Maybe as in an optional callout section?

[gjcooper]

I like the idea about an optional call out section. I find when I teach this, at least 50% of the time I find myself mentioning Ctrl+D and manual input anyway. I could draft a PR to get a feel for how that would look, perhaps with a reference to the callout later in the lesson when pipes are introduced.

[bkmgit]

@gjcooper A PR is greatly appreciated.

[sabaferdous12]

Agreed - I would like to see the functioning of Ctrl+D in a callout as I could not understand how it works and provides interactive inputs on the unix shell.

[giselatt]

So far I have only been a helper once for the Unix Shell lesson, and I was actually asked about how manual input works (and was very happy that I could answer the question). Would be great to have it included in some way.