Stuff worth explaining
======================
.bash_prompt
~~~~~~~~~~~~
This file provides ``prompt_command`` function that is executed by the 
shell just before displaying ``PS1`` (which the function sets). The result is a
colored shell prompt.
Note that the clock is not real-time. It updates after your shell command 
finishes (e.g. after you press enter). That's sufficient if you want to 
know how long your db backup took, for example.
Exit codes
----------
.. image:: https://bitbucket.org/av6/dotfiles/raw/tip/docs/prompt-exit.png
Virtualenv
----------
.. image:: https://bitbucket.org/av6/dotfiles/raw/tip/docs/prompt-venv.png
Mercurial prompt
----------------
There are two implementations of mercurial prompt: using a separate mercurial
extension `hg-prompt <http://sjl.bitbucket.org/hg-prompt/>`_, and a fallback
implementation in pure bash.
The screenshot shows the former in action:
.. image:: https://bitbucket.org/av6/dotfiles/raw/tip/docs/prompt-hg.png
Pure bash implementation currently lags behind in features.
Git prompt
----------
.. image:: https://bitbucket.org/av6/dotfiles/raw/tip/docs/prompt-git.png
Root prompt
-----------
.. image:: https://bitbucket.org/av6/dotfiles/raw/tip/docs/prompt-root.png
Mercurial and Git support is disabled for root, thus two colored dashes.
.bash_aliases
~~~~~~~~~~~~~
This file contains aliases. Currently, the only alias that is not exactly 
self-explanatory is ``whatsopen``. In short, it's an alternative to 
``sockstat`` from FreeBSD. It shows listening (TCP) applications, like 
``netstat -ntlp``, but with a handy difference. It additionally shows 
users, so instead of this::
    Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name    
    tcp        0      0 127.0.0.1:5984          0.0.0.0:*               LISTEN      30617/beam.smp      
you get this::
    COMMAND     PID    USER   FD   TYPE  DEVICE SIZE/OFF NODE NAME
    beam.smp  30617 couchdb   16u  IPv4 7652760      0t0  TCP 127.0.0.1:5984 (LISTEN)
As you can see, it's much easier to guess what beam.smp is when you know
couchdb owns it.