Init : someone could comment this ?

[Bill Nottingham]

Alan Cox (alan at redhat.com) said: 
> Fork should be pretty cheap - although that depends how much memory is unshared
> by each of the resulting tasks. A smaller cleaner shell such as rc (which was
> designed for this job in plan 9) or ash might well perform better. I'm dubious
> it would be a big difference but someone can bench it.

ash has been benchmarked. Required rooting out some bashisms from the scripts
(or just calling those specific scripts with bash), but in any case, it didn't
make much difference.

Bill