Syscall
guest@6admin.io:~$ ls ~/tags/syscall
Portable assembly does not exist
A concrete inventory of everything that changes from one OS to another once you drop down to assembly: assemblers, executable formats, ABIs, calling conventions and system calls. Spoiler, the word portable does not survive the trip.
Linux syscalls
Syscalls, the boundary between user space and the kernel and how to observe them with strace.