Linux:

Linux setup
remote desktop
KVM
iSCSI
multipathing
cluster
Xen

kernel interfaces
kernel debugging
kernel tracing and profiling

Making Linux patch

Python

---

Windows kernel interfaces

OS X kernel interfaces

FreeBSD setup
FreeBSD kernel interfaces

---

VAX MP

---

Fax found by fax machine at SAP building

VAX/VMS great security hole (a reminiscence)

Early history of Oracle in the USSR (a reminiscence, in Russian)