[YLUG] How do to substition in a file with sed or similar

[Ewan Mac Mahon]

On Fri, Oct 27, 2006 at 11:47:56AM +0100, Robert Hulme wrote:
> Hi list,
> 
> I know I can:
> sed s/foo/bar/ myfile
> 
> which dumps to stdout
> 
> How I do the substition on the file 'in place'?
>
With the sed 'in place' switch, this, from the man page:
   -i[suffix], --in-place[=suffix]
      edit files in place (makes backup if extension supplied)

Also - Perl!? I know there's more than one way to do it, but this one
doesn't involve loading a great big interpreter.

Ewan
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