Some Colorful diagrams showing operating system features in a different way:
1) Computer Operating Systems.
2) Unix Like Operating Systems Map.
3) Unix Linux Time Line.
4) Map of GNU/Linux OS and FOSS.
5) Linux FileSystem Hierarchy.
6) Linux LVM.
7) Linux Kernel Map.
8) Network Protocol Map.
9) Network Management Architecture and Technologies.
10) Network Security Map.
