One-line global string replace in all files with sed (or awk?)

[Al Johnson]

> A few years ago, I'm sure I came across a one-line way of replacing
> every occurence of one string with another in an entire directory of
> files (potentially including all subdirectories as well).  I think it
> used sed or awk.  Now I can't find it.  The examples on the Web are all
> multiline scripts or programs, but I'm sure I saw a way to do it all on
> just one line.
> 
> Can anyone tell me how to do this?

Try this.

Global search and replace, with backup:
# find . -type f | xargs sed -i.bak "s/oldtext/newtext/g"

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