GNU Screen has a command called exec that will launch a subprocess and optionally let you do things with its file descriptors, including tying them in your window. I frequently use :exec !! sx -b ...
The LSB is a specification, and as such, should be provider neutral. But it contains many “hard‑coded” reference to GNU at many places. Ex. the ELF Linux's specific entries PT_GNU_STACK, PT_GNU_RELRO ...
I have problem with atd daemon. If at is called by non-root, it creates task, but it is empty (content of /var/spool/atd). I do not remember what I have done before it broke that way. What else ...