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From: Boyd Stephen Smith Jr. on 29 Jul 2010 12:20
On Thursday 29 July 2010 05:27:35 Mart Frauenlob wrote:
> On 29.07.2010 07:17, Boyd Stephen Smith Jr. wrote:
> > On Wednesday 28 July 2010 21:37:44 Karl Vogel wrote:
> >> I need to think before posting. I didn't mention that I have
> >> FreeBSD, Linux, and Solaris boxes, and unfortunately I can't
> >> guarantee the same access to GNU find. I can install xargs if the
> >> system version doesn't recognize the "-0" option, so I usually end
> >> up scripting for the lowest common denominator.
> >
> > In that case, you'll have to be very careful in order to handled file
> > names that contain IFS characters or newlines:
> >
> > find "$MAGDIR" -name "*.[zZ][iI][pP]" -exec \
> >
> > sh -c 'handle_single_file "$1"' ignored {} \;
> >
> > That will work on any POSIX system, or most systems with POSIX-conforming
> > find and sh. You *may* have to specify full paths to the
> > POSIX-conforming find and sh commands.
>
> yes, '-exec command {} +' is also POSIX, but newer (collects argument
> list similar to xargs).

In that case, you may be able to avoid spawning quite as many processes by
doing something like:

find "$MAGDIR" -name "*.[zZ][iI][pP]" -exec \
sh -c 'handle_many_files "$@"' ignored {} +

Note that I used the "-exec cmd \;" form explicitly because the "-exec cmd +"
form is newer.

> I think using '-type f' would not be wrong either, as otherwise we would
> match directories also.

Probably not a bad idea.
--
Boyd Stephen Smith Jr. ,= ,-_-. =.
bss(a)iguanasuicide.net ((_/)o o(\_))
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From: Chris Davies on 30 Jul 2010 07:30
Karl Vogel <vogelke+debian(a)pobox.com> wrote:
> for file in $(ls $MAGDIR/*.[Zz][Ii][Pp] 2> /dev/null); do ...

mkdir $MAGDIR/silly.zip
touch $MAGDIR/silly.zip/not-a-zip-file

If you're going to insist on using "ls" you should consider "ls -d".

Personally, I'd still go for this construct:

for FILE in "$MAGDIR"/*.[Zz][Ii][Pp]
do
test -f "$FILE" || continue
...

But each to our own.
Chris


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