need recovery of overwritten file

[Gerardo]

be recovered a rewritten can file?

 

[rocky]

You can't recovery an overwritten file You should find a backup file somewhere...

 

[SirDice]

be recovered a rewritten can file?

Not unless you have a backup.

 

[phoenix]

There are a few tools in the ports tree that can recover filesystems. Perhaps one of those can recover individual files. You'll want to mark the filesystem in question as read-only ASAP, to prevent the deleted blocks from being reused by another file. Once that happens, there's no way to recover the data.

 

[SirDice]

Once that happens, there's no way to recover the data.

If I understood the OP correctly the file already has been overwritten x(

It's at moments like that that you really start to appreciate all the trouble you've had in getting a good backup system up and running..