[Lula] Command line search/replace question

[TheBlueSage]

Hi folks,

I'm sure this can be done at the command line level, so was wondering if
anyone can tell me how, or point me in the right direction.

in a dir on my drive I have a series of text files. I also have sub
directories that have text files in them and more sub directories etc
etc.

in most of the files is a text string "blahOneBlahTwo". I want to
replace it with the text string "newOnenewTwo" in EVERY case,
recursively through the entire directory and its subs... (maybe four
deep, and a total of 60 files.)

can anyone tell me how ?

thanks,

Richard