tail

[Hamish]

If the first character of N (the number of bytes or lines) is  a  `+',
print beginning with the Nth item from the start of each file,
 otherwise, print the last N items in the file.
N may have a multiplier suffix: b 512, k  1024,  m 1024*1024.

ho fatto due provine...

tail -n +0 /var/log/messages | wc -l
534894

tail -n +534300  /var/log/messages | wc -l
595

direi che torna perfettamente