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From: akabou on 7 Feb 2010 04:58
On 7 fév, 10:48, akabou <dvdmonster...(a)gmail.com> wrote:
> On 7 fév, 03:12, Ben Bacarisse <ben.use...(a)bsb.me.uk> wrote:
>
>
>
> > akabou <dvdmonster...(a)gmail.com> writes:
>
> > <snip>
>
> > > Thanks for your answer, but my probleme is that the pictures aren't in
> > > the same directory
> > > then the script, that why the answer of the find ~/pictures/ -iname "*
> > > $type"
> > > is ~/pictures/mypict.jpg and i want to insert a word befor mypict.jpg..
> > > Thanks for your answer
>
> > There are lots of ways to go about this but you might find $(dirname
> > $f)/small_$(basename $f) to be the key to what you want to do.
>
> > --
> > Ben.
>
> OK, i've modified my script to enter in a loop and try do this
> differently,
> i've mixed mop2 and ben bacariss
>
> here is the script.
>
> SOURCE=$1 --> this is the directory
> TYPE=$2      --> this is the file type
> find $SOURCE -iname "*$TYPE" |
> while read f;do
> convert $f -resize 50% $(dirname $f)/small_$(basename $f)
> done
>
> it seems to ben ok, when i put an echo
>
> akabou(a)debian:~/sp3$ ./essaie_convert.sh /home/akabou/sp3/
> pictures/ .jpg
> convert /home/akabou/sp3/pictures/chambre_gite.jpg -resize 50%  /home/
> akabou/sp3/pictures/small_chambre_gite.jpg ;
> convert /home/akabou/sp3/pictures/CCF31122009_00000.jpg -resize 50%  /
> home/akabou/sp3/pictures/small_CCF31122009_00000.jpg ;
> convert /home/akabou/sp3/pictures/IMAG0367.jpg -resize 50%  /home/
> akabou/sp3/pictures/small_IMAG0367.jpg ;
> convert /home/akabou/sp3/pictures/IMAG0364.jpg -resize 50%  /home/
> akabou/sp3/pictures/small_IMAG0364.jpg ;
>
> but when i remove echo before convert, he gives me an error.
>
> convert: unable to open image `/home/akabou/sp3/pictures/
> small_chambre_gite.jpg': No such file or directory.
> convert: unable to open image `/home/akabou/sp3/pictures/
> small_CCF31122009_00000.jpg': No such file or directory.
> convert: unable to open image `/home/akabou/sp3/pictures/
> small_IMAG0367.jpg': No such file or directory.
> convert: unable to open image `/home/akabou/sp3/pictures/
> small_IMAG0364.jpg': No such file or directory.
>
> I confirm that the file are in the directory
> when a paste this
> convert /home/akabou/sp3/pictures/chambre_gite.jpg -resize 50%  /home/
> akabou/sp3/pictures/small_chambre_gite.jpg ;
>
> to the terminal no erro and the file is resized.
>
> ????????????
>
> does anyone have an idea.
>
> Thanks

OK, i've find the problem i had a space after basename$f),

convert $f -resize 50% $(dirname $f)/small_$(basename $f) \;

thanks you very much to all.
From: mop2 on 7 Feb 2010 05:03
On Sun, 07 Feb 2010 07:48:30 -0200, akabou <dvdmonster.fr(a)gmail.com> wrote:

> while read f;do
> convert $f -resize 50% $(dirname $f)/small_$(basename $f)
> done


dirname and basename are external commands, and you dont need them:

while read f;do echo convert $f -resize 50% ${f%/*}/small_${f##*/};done

I don't know if this is true for your shell
From: Chris F.A. Johnson on 8 Feb 2010 07:09
On 2010-02-07, mop2 wrote:
> On Sun, 07 Feb 2010 07:48:30 -0200, akabou <dvdmonster.fr(a)gmail.com> wrote:
>
>> while read f;do
>> convert $f -resize 50% $(dirname $f)/small_$(basename $f)
>> done
>
>
> dirname and basename are external commands, and you dont need them:
>
> while read f;do echo convert $f -resize 50% ${f%/*}/small_${f##*/};done
>
> I don't know if this is true for your shell

It is part of the standard Unix shell.

--
Chris F.A. Johnson, author <http://shell.cfajohnson.com/>
===================================================================
Shell Scripting Recipes: A Problem-Solution Approach (2005, Apress)
Pro Bash Programming: Scripting the GNU/Linux Shell (2009, Apress)
===== My code in this post, if any, assumes the POSIX locale =====
===== and is released under the GNU General Public Licence =====
From: Sven Mascheck on 8 Feb 2010 15:42
mop2 wrote:

> dirname and basename are external commands, and you dont need them:
> while read f;do echo convert $f -resize 50% ${f%/*}/small_${f##*/};done

Footnote: This looks reasonable for "real" file paths, e.g., /dir/dir/file.

Keep in mind, though, that the external utilities try to catch all the
corner cases. For example:
- an argument without any / is equivalent to ./argument
- basename simply yields the last element of a path, which might
be a directory. This applies even with a trailing slash.
- be robust against consecutive slashes anywhere
- results make sense even if the argument is quite short,
dir/, ., /, /., ./, etc.
- empty argument is equivalent to . (in some implementations)

This requires some script glue around the above parameter substitutions.
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