+* [Debian "stretch": 40 RC bugs](https://lists.debian.org/debian-devel-announce/2017/04/msg00008.html)
+* [Linux from Scratch](https://en.wikipedia.org/wiki/Linux_From_Scratch)
+* Certification
+ * [LPI](https://www.lpice.eu/)
+ * [Linux Foundation](https://training.linuxfoundation.org/certification)
+*