-Linux is now one of the most widespread operating system for embedded devices due to its openess as well as the wide variety of platforms it can run on. Many manufacturer actually use it in firmware you can find on many devices : DVB-T decoders, routers, print servers, DVD players ... Most of the time the stock firmware is not really open to the consumer, even if it uses open source software.
-
-You might be interested in running a Linux based firmware for your router for various reasons : extending the use of a network protocol (such as IPv6), having new features, new piece of software inside, or for security reasons. A fully open-source firmware is de-facto needed for such applications, since you want to be free to use this or that version of a particular reason, be able to correct a particular bug. Few manufacturers do ship their routers with a Sample Developpment Kit, that would allow you to create your own and custom firmware and most of the time, when they do, you will most likely not be able to complete the firmware creation process.
-
-This is one of the reasons why OpenWrt and other firmware exists : providing a version independent, and tools independent firmware, that can be run on various platforms, known to be running Linux originaly.
-
-\subsection{Which Operating System does this device run ?}
-
-There is a lot of methods to ensure your device is running Linux. Some of them do need your router to be unscrewed and open, some can be done by probing the device using its external network interfaces.
+Linux is now one of the most widespread operating system for embedded devices due
+to its openess as well as the wide variety of platforms it can run on. Many
+manufacturer actually use it in firmware you can find on many devices: DVB-T
+decoders, routers, print servers, DVD players ... Most of the time the stock
+firmware is not really open to the consumer, even if it uses open source software.
+
+You might be interested in running a Linux based firmware for your router for
+various reasons: extending the use of a network protocol (such as IPv6), having
+new features, new piece of software inside, or for security reasons. A fully
+open-source firmware is de-facto needed for such applications, since you want to
+be free to use this or that version of a particular reason, be able to correct a
+particular bug. Few manufacturers do ship their routers with a Sample Development Kit,
+that would allow you to create your own and custom firmware and most of the time,
+when they do, you will most likely not be able to complete the firmware creation process.
+
+This is one of the reasons why OpenWrt and other firmware exists: providing a
+version independent, and tools independent firmware, that can be run on various
+platforms, known to be running Linux originaly.
+
+\subsection{Which Operating System does this device run?}
+
+There is a lot of methods to ensure your device is running Linux. Some of them do
+need your router to be unscrewed and open, some can be done by probing the device
+using its external network interfaces.