SV: SV: Wish: checksumming *sum filter

[Ole Tange]

Fra: Pádraig Brady <address@hidden> 

> In the general case write access would probably be required, like with sort 
> above.

Doing similar to `sort` seems like wise approach: In memory if short. On 
$TMPDIR if big.

I did not know about BSD's signify. The 'ftp url | ...' is the primary use case 
I would use it for. Another would be to read an old (maybe corrupted) backup 
that I had checksums of.


/Ole