Linux kernel interfaces
Windows kernel interfaces
OS X kernel interfaces
FreeBSD kernel interfaces

Linux kernel debugging

Linux kernel tracing and profiling

Making Linux patch

Linux setup
Linux Xen setup
FreeBSD setup
iSCSI setup

Python

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)