export image and CGI

[Andre Garzia]

Friends,

I am generating some images on runtime for a CGI, I'd like to use  
export ... as JPEG command to save my image data to a variable that I  
could output to the browser. This is specially useful for example for  
building captcha checks. I double checked my code but again, rev  
gives an error... is this command available for the linux engine  
running on console?

Cheers
andre