On 28/11/2006 19:06, Chris Purves wrote:
Ian Abbott wrote:
On 27/11/2006 23:32, Chris Purves wrote:
I have tried
cat filelist | xargs clamscan
This works, except that xarg can only pass about 200 filenames to
clamscan at a time. So for a filelist containing 1000 filenames
clamscan will be started 5 times, creating extra overhead.
You'll also find that it fails for file names containing whitespace,
quote marks, or backslashes. To work around that, you could use
tr '\n' '\0' < filelist | xargs -0 clamscan
or generate the filelist with null-separated filenames in the first
place (perhaps using find's -print0 command) to avoid the tr. This
assumes you are using the GNU versions of find and xargs. The -0
option of GNU xargs causes it to use null-separated file names as-is
and shell-quote them properly.
Yes, I was using find -print0 | xargs -0 combination when creating my
filelist. I didn't know about the 'tr' command, though. You learn
something new every day.
The 'tr' version still wouldn't work for filenames containing embedded
newlines though, which is one reason why generating the filelist with
null-separated filenames in the first place is better!
--
-=( Ian Abbott @ MEV Ltd. E-mail: <[EMAIL PROTECTED]> )=-
-=( Tel: +44 (0)161 477 1898 FAX: +44 (0)161 718 3587 )=-
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