xv6, a simple Unix-like teaching operating system       xv6 book       source code booklet

[ostep] Operating Systems: Three Easy Pieces, Remzi H. Arpaci-Dusseau and Andrea C. Arpaci-Dusseau

[vmbook] Virtual Machines: Versatile Platforms for Systems and Processes, James E. Smith and Ravi Nair.

[dive] Dive Into Systems, Suzanne J. Matthews, Tia Newhall, Kevin C. Webb

[csapp] Computer Systems: A Programmer's Perspective, Randal E. Bryant and David R. O'Hallaron

[tlipi] The Linux Programming Interface, Michael Kerrisk

Linux System Programming, Robert Love

Operating System Concepts, by Silberschatz, Galvin and Gagne

Think OS A Brief Introduction to Operating Systems, by Allen B. Downey