[TUHS] Deleted lib1 and lib2 in v6, recoverable?

[Will Senn]

On Dec 30, 2018, at 8:28 PM, Doug McIlroy <doug at cs.dartmouth.edu> wrote:

>> But wasn't it tsort that did the heavy lifting to get things in order?
> 
> An amusing notion. Having written tsort, I can assure you it couldn't
> lift anything heavy--it used the most naive quadratic algorithm. But
> it was good enough for libc.
> 
> Doug

I don’t see tsort anywhere on the system, is it v7 or an addon to v6? 

Thanks,

Will