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Re: sed --in-place bug (updates mtime of file even if no changes are mad
From: |
John Cowan |
Subject: |
Re: sed --in-place bug (updates mtime of file even if no changes are made) |
Date: |
Mon, 12 Dec 2011 20:10:56 -0500 |
User-agent: |
Mutt/1.5.18 (2008-05-17) |
Bob Proulx scripsit:
> BTW... Whenever I need to do something like this I always grep first
> and edit only if the grep tells me that I need to do something. That
> way the file isn't modified if there isn't any change to it.
>
> if grep -q address@hidden somefile; then
> sed --in-place 's/address@hidden/address@hidden/'
> fi
Or, more efficiently:
grep -r -q address@hidden /the/root/place | xargs sed --in-place
s/address@hidden/address@hidden/
--
Note that nobody these days would clamor for fundamental laws John Cowan
of *the theory of kangaroos*, showing why pseudo-kangaroos are address@hidden
physically, logically, metaphysically impossible. http://www.ccil.org/~cowan
Kangaroos are wonderful, but not *that* wonderful. --Dan Dennett on zombies