Not for a couple of months - I need to get my startup in beta first, but the sysadmin tutorial site is next on my to-do list.
I read the "stracing ls" article (I think it was posted here), which was fascinating reading. I am planning to write higher-level tutorials rather than dissecting low-level commands, although now that I think about it a mix of the two would be better.
Thanks for the feedback - if there are any specific areas you would like to see covered do let me know, and I'll do my best to include them.
For my interest making some of the low level processes more understandable would be great.
Recently I came across a sysadvent article on stracing 'ls' it was exactly the kind of thing that is useful to me. (quite probably an HN or reddit/r/programming link)
Also in the "Land of Lisp" book learning what the bit operator 'ash' does was a real eye-opener.
Both of these things are pretty basic for someone with a CS or EE background. But I think a lot of sysadmins come from other backgrounds. A bit more than a decade ago I was a grad student in a Literature department and found myself inexplicably attracted to Linux, OpenSource and started to try and extricate myself from Windows gui-ness. Eventually landed a sysadmin job about 5 yrs ago after taking some CS courses and some DIY learning.
In short I have real weaknesses in math and low level understanding of what is happening at the kernel level - I really treasure things like the 2 mentioned articles as they shed light on what is going on at a lower level.