Man, I think you want to send via email those PNG files, right?
If so, I usually use mailx (instead of mail) to create a message with attachments... Its not on any ubuntu by default but you are an apt-get install away. Its pretty straight forward, I believe if you read the man you wont have any problems. -- Fábio Leitão ..-. .- -... .. --- .-.. . .. - .- --- ...-.-
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