the usual blog cleanups

Signed-off-by: Nico Schottelius <nico@brief.schottelius.org>

blog/sexy-network-bootstrap.mdwn

@@ -2,9 +2,9 @@
 
 ## Introduction
 
-This article will explain how to begin to manage a network
-with [[sexy|software/sexy]]. I assume you can start almost on a green field, 
-if not, insert your site specific changes into the process.
+This article explains how to begin to manage a network
+with [[sexy|software/sexy]]. Because I just moved house,
+I take my home network as an example.
 
 ## Prerequisites
 
@@ -47,11 +47,7 @@ Now we can network cards to this host:
 
 ## Add the network
 
-In sexy, the host and net-ipv4 areas are disconnected: You can use sexy to manage
-only hosts, to manage only networks or to manage both. To allow this flexibility,
-the network part does not know about any information from the host part.
-Luckily enough, you don't need to re-enter the information, but you can retrieve
-them from the database. Currently, sexy only allows you to manage IPv4 based networks 
+Currently, sexy only allows you to manage IPv4 based networks 
 - IPv6 may be added in future releases. So the command to remember for now, is
 **net-ipv4**:
 
@@ -63,6 +59,12 @@ Now we created the network 192.168.24.0/22.
 
 ## Add a host to a network
 
+In sexy, the host and net-ipv4 areas are disconnected: You can use sexy to manage
+only hosts, to manage only networks or to manage both. To allow this flexibility,
+the network part does not know about any information from the host part.
+Luckily enough, you don't need to re-enter the information, but you can retrieve
+them from the database.
+
 The previously added host, **katze.intern.schottelius.org**, is the router of
 my home network and it should use the first IPv4 address in the network.
 The **net-ipv4 host-add** command can be used to add a host:
@@ -91,15 +93,15 @@ the network, it used .1:
 
 Sexy does not know which DNS or DHCP server you may be using.
 To implement changes to your architecture (probably using
-a software like [[cdist|software/cdist]]), sexy supports using
-**backends**.
+a software like [[cdist|software/cdist]]), sexy supports
+**backends** to do the change.
 
 For my home network, I am going to use 
 [dnsmasq](http://www.thekelleys.org.uk/dnsmasq/doc.html), because the
 router is a small [Soekris net5501](http://soekris.com/net5501.htm).
 
 The backends are stored in **~/.sexy/backend** and for this 
-example tutorial, I will only create **~/.sexy/backend/net-ipv4/apply**:
+example tutorial, I will create **~/.sexy/backend/net-ipv4/apply**:
 
     % cat ~/.sexy/backend/net-ipv4/apply 
     #!/bin/sh -e
@@ -126,20 +128,21 @@ example tutorial, I will only create **~/.sexy/backend/net-ipv4/apply**:
         done
 
         mv "${tmp}" "${dstfile}"
-    eof
     done
 
     cd "${dst_dir}"
     git add .
-    git commit -m "Update Sexy generated network configuration" -o -- .
+    git commit -m "Update Sexy generated network configuration" -o -- . 2>/dev/null || true
     echo "Transferring changes to git remote"
-    git pull
-    git push
+    git pull --quiet
+    git push --quiet
 
     "$cdist_bin" config -v zuhause.schottelius.org
 
-This backend in essence creates the dnsmasq configuration and executes cdist afterwards
-to apply the changes.
+
+In essence this backend creates the dnsmasq configuration and executes cdist afterwards
+to apply the changes. I personally prefer a backend to be shell script, but it can be
+any kind of executable.
 
 ## Adding more hosts
 
@@ -154,9 +157,15 @@ server, I'll add my notebook and the fileserver to sexy:
     % sexy net-ipv4 host-add -m $(sexy host  nic-addr-get -n nic0 brief.intern.schottelius.org) -f brief.intern.schottelius.org 192.168.24.0    
 
 As you can see, if I do not specify the name of the nic, sexy automatically uses **nic0**
-for the first nic and counts up. This decision was made, as network device names vary between
+for the first nic. This decision was made, as network device names vary between
 operating systems and even operating system versions.
 
+## Applying the configuration
+
+The previously created backend will get executed with all existing networks,
+if you run the apply command with the **--all** parameter:
+
+    % sexy net-ipv4 apply --all
 
 ## The result