Text Animation

[Fazer]

Hello,

I was wondering if anyone has done any simple text-based animation?

I mean things such as text-based pre-loaders.  One example would be
when you use the *nix utility called `wget.` You get that fancy "
====> " type of animation as you download a large file.  Or maybe even
a rotating " | " that I have seen before in some installation
programs.

Any ideas how these effects can be achieved?

Thanks a lot!

Faizan