pg_dump error codes

[alexandre - aldeia digital <alexandre@xxxxxxxxxx>]

Hi,

(maybe an idiot question)

In my Linux bash backup scripts, I wish to send an e-mail when an error 
occurs in pg_dump proccess. And if possible, I want to send the error 
output via e-mail.

Anybody knows how to capture the output and send this to an e-mail ONLY 
if an error occurs ?

Thanks

Alexandre