sed is you friend
lets assum there DNS files and you need to update the serial numbers so
each file has something like
2000057100 ; Serial
to update them all to todays serial
I'm going to assume they've all been changed at least this year to make
the regex simpler
#!/bin/bash
cd /var/named
for i in db.*;
do
sed 's/2000[0-9][0-9][0-9][0-9][0-9][0-9][:space:]*;[:space:]*Serial/2000102100
;Serial/' < $i > $i.tmp
&& mv $i.tmp $i
done
make sure you back up befor you try anything :)
On Sat, Oct 21, 2000 at 02:34:06AM -0400, Daniel Freedman wrote:
>
> Hi,
>
> I'm looking to do some batch text editing by applying the changes I make
> to one file to many other similar (although not identical) files. The
> text portions I'm changing in the first file, however, ARE in fact
> identical in the other files.
>
> I was thinking of doing a context diff and then a patch, but I don't think
> I can easily edit the context diff such that, upon patching, it will only
> patch certain areas (I know the patch is wise to its context, it's just
> that I don't think i can easily alter the patch itself before applying,
> because its embedded line numbers would have to be changed to account
> for my edits in the patch).
>
> I also tried to do a diff -e (to produce some patchfile 'p' to feed to
> ed), then hand-edit 'p', then invoke:
> (cat p; echo '%p') | ed - orig > new
> This should work better, I think, since it reverse lists the changes to
> somewhat avoid the line numbering problem. It is, in fact, working in
> some cases, but when the hand-editing of the patchfile is more involved,
> it's not very graceful. I list an example below.
>
> Am I missing something here, please? Is there a better way to do this
> (I'm sure there is)?
>
> Thanks for any and all suggestions... I really appreciate your help.
>
>
> Take care,
>
> Daniel
>
>
>
>
>
> --
> SLUG - Sydney Linux User Group Mailing List - http://slug.org.au/
> More Info: http://slug.org.au/lists/listinfo/slug
--
John
The difference between a good man and a bad one is the
choice of cause - William James
--
SLUG - Sydney Linux User Group Mailing List - http://slug.org.au/
More Info: http://slug.org.au/lists/listinfo/slug
