Re: [gentoo-user] [OT]batch processing html files

[Etaoin Shrdlu]

On Wednesday 30 April 2008, 17:52, Matthew R. Lee wrote:

> I have a folder full of .html files and I need to go through and
> replace in each and every one of them a couple of bits of info. I know
> I can do this using the following from the command line:
> sed 's/VV, ppp-ppp/81, 51-67/' file.html > newfile.html | mv
> newfile.html file.html
> Problem is I need to do this on nearly 200 files.  I assume it could
> be done with a script, but I have zero experience in writing scripts.

If all the files are in the same directory, you can do

cd /your/directory
for f in *.html; do
  sed -i 's/VV, ppp-ppp/81, 51-67/' "$f"
done

The -i flag tells sed to edit the file "in place", ie, the changes are 
made to the file itself (of course, sed does create a temporary file 
behind the scenes, but that is handled by sed).
To stay on the safe side, I suggest specifying a suffix to -i, so that 
sed creates backup copies of the files, eg

sed -i BAK etc.

will create a backup file called "$f.BAK" when modifying "$f".
When you're sure the changes are correct, you can of course delete all 
the BAK files. Otherwise, use them to restore the original files and 
start over.

Hope this helps.
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