best way to replace first word in string?

[William Park]

hagai26 at gmail.com <hagai26 at gmail.com> wrote:
> I am looking for the best and efficient way to replace the first word
> in a str, like this:
> "aa to become" -> "/aa/ to become"
> I know I can use spilt and than join them
> but I can also use regular expressions
> and I sure there is a lot ways, but I need realy efficient one

I doubt you'll find faster than Sed.

man sed

-- 
William Park <opengeometry at yahoo.ca>, Toronto, Canada
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