In designing the disk layout it is important not to split off the directory tree structure at the wrong points, hence this section. As it is highly dependent on the FSSTND it has been put aside in a separate section, and will most likely have to be totally rewritten when FHS is released. Nobody knows when that will happen, and at the time of writing this a debate of near-religious qualities is taking place on the mailing list. In the meanwhile this will do.
Remember that this is a list of where a separation can take place, not where it has to be. As always, good judgement is always required.
Again only a rough indication can be given here. The values indicate
0=don't separate here 1=not recommended ... 4=useful 5=recommended
In order to keep the list short, the uninteresting parts are removed.
Directory Suitability / | +-bin 0 +-boot 0 +-dev 0 +-etc 0 +-home 5 +-lib 0 +-mnt 0 +-proc 0 +-root 0 +-sbin 0 +-tmp 5 +-usr 5 | \ | +-X11R6 3 | +-bin 3 | +-lib 4 | +-local 4 | | \ | | +bin 2 | | +lib 4 | +-src 3 | +-var 5 \ +-adm 0 +-lib 2 +-lock 1 +-log 1 +-preserve 1 +-run 1 +-spool 4 | \ | +-mail 3 | +-mqueue 3 | +-news 5 | +-smail 3 | +-uucp 3 +-tmp 5
There is of course plenty of adjustments possible, for instance a home user
would not bother with splitting off the
/var/spool hierarchy but
a serious ISP should. The key here is usage.