very stupid mistake: a part of /usr is deleted

[Zara Kanaeva]

Hi all,

vor 2 hours i made a very stupid mistake: i have deleted (as root  
naturally) a part of /usr-directory. I have definitely deleted .snap  
and presumably 100-150 files in /usr/bin.  If my attempt with  
backup-restore failed, can i get the binaries, that was deleted, with  
sysinstall/distributions/base ?

uname -a ->
FreeBSD (XXXXXX).uni-tuebingen.de 8.0-RELEASE FreeBSD 8.0-RELEASE #0:  
Sat Nov 21 15:02:08 UTC 2009      
root at mason.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC  amd64

thanks,
-- 
Zara Kanaeva.