README.md

@@ -6,21 +6,27 @@ This is a system utility written in C that allows one to quickly black hole host
 
 # How it Works
 
+The program "blackholes" hosts by setting their entries in /etc/hosts to be
+`0.0.0.0` so that when one tries to resolve the host in the browser the host will
+resolve to `0.0.0.0`.
+
 The program will wake up in a configurable timeframe continuously, reading a config file into memory and making appropriate changes to the /etc/hosts based on what it reads from the config.
 
+Starting the program like this allows for the program to run as a daemon:
+
+```bash
+sudo hb -period <wakeup period> -config <path/to/config> -daemon
+```
+
+The config file at the moment is just a newline separated list of hosts that will
+be added to the /etc/hosts file.
+
 # Motivations
 
 I would like to get better with C, and will be using C much more in the near future. In addition, I have issues with browsing to sites that hurt my productivity and am always on the command line.
 
 # TODO
 
-1. Get  delete working for my /etc/hosts editor.
-2. Daemonize this program to be started up by systemd.
-    - As part of daemonization, remember and remove added hosts on teardown.
-    - Can do this with an atexit handler, and a routine in main.
-3. Log dns requests that look at the hosts file -- To see how many go where
-4. As part of daemonization -- only block hosts within a time limit.
-    - Sleep, wakeup, check if time has passed or not, block/unblock host,
-      sleep again.
-5. Read hosts to block from a config file (to not pollute the /etc/hosts file)
-6. Design a unified interface for reading a hosts file. 
+- Debug logging
+- Systemd unit file for running as a daemon
+