fhs

[Alan Cox]

On Tue, Dec 23, 2003 at 05:44:03PM +0100, Xose Vazquez Perez wrote:
> /usr must be a read only and very static fs.

Right

> "/usr is the second major section of the filesystem. /usr is shareable,
> read-only data. That means that /usr should be shareable between various
> FHS-compliant hosts and must not be written to. Any information that is
> host-specific or varies with time is stored elsewhere."
> 
> "/usr/src : Source code (optional)
> Purpose
> 
> Source code may be place placed in this subdirectory, only for reference purposes.*

Rereading it while awake it makes a lot of sense. /usr/src/linux is used for
reference purposes (its headers etc). I'd not read the reference purposes bit
properly last night (well this morning...)

> * Generally, source should not be built within this hierarchy."

And it says "generally", so its advisory but good advice.