When I want some background on the kernel, then I go to Jon's book(s) or one of his lwn write-ups on some new feature. I have been on the look-out for good Linux/Unix user space and system programming books. There is a lot of old trash out there but the same Robert Love wrote the excellent "Linux System Programming" a few years back. I would like to bring your attention to "The Linux Programming Interface" by Michael Kerrisk. Hard cover and over 1500 pages this is not one to drop on your foot. Only a month old, circa lk 2.6.35 and proof read by the likes of Christoph Hellwig amongst many others. Given the increasing tendency of technical books to contain the wrong English word (e.g. two instead of too), typos and deeply flawed example code; Kerrisk's book seems to be a return to old values. Jon, do you have time to review a 1500 page book?