recrusiv scale of jpg images

saavik · 09-29-2006, 03:55 AM

Hy!

I plan a jpeg archive for our complany.

Unfortunatelly some people think they have to save there pictures with 5.1 mil. pixels so my database keeps growing.

Now my question:

I can use:

for f in *.jpg ; do djpeg $f | pnmscale -xysize 1024 768 | cjpeg -qual 75 >1024-$f ; done

to resale the jpegs to 1024x768 but as the users are able to create there own subfolders I would like to uses the string above recrusivly.

Who can i do that ?

scoban · 09-29-2006, 04:02 AM

Go to top directory

find . -type f -name "*.jpg" -print | while read x; do djpeg $x | pnmscale -xysize 1024 768 | cjpeg -qual 75 >1024-$x ; done

saavik · 09-29-2006, 04:07 AM

Ok, but

-bash: 1024-./public/img_2684_2.jpg: Datei oder Verzeichnis nicht gefunden

seems to me that $x could not be uses as it does not only store the filename but the whole path. trying to figer that out.....

Should be something with awk -F/ {'print$2'}

Thanks!

konsolebox · 09-29-2006, 04:12 AM

try this command. please test it first.

Code:

OLDIFS=$IFS; IFS=$'\n'
for f in $(find -type f | grep -i "\.jpg$"); do
	d=${f/\/*}; [ -z "$d" ] && d=.
	djpeg $f | pnmscale -xysize 1024 768 | cjpeg -qual 75 > ${d}/1024-$f
done
IFS=$OLDIFS

saavik · 09-29-2006, 04:26 AM

same mistake

./test.scr: line 4: ./1024-./public/img_2684.jpg: Datei oder Verzeichnis nicht gefunden

the './1024' is at the wrong place.

Two strings have to be used as

1.) I need the whole path as the source
2.) as target i need the folder then i would like to insert 1024 and then comes the old filename....

lets see....

konsolebox · 09-29-2006, 05:10 AM

sorry my mistake. used dirname instead.

Code:

OLDIFS=$IFS; IFS=$'\n'
for f in $(find -type f | grep -i "\.jpg$"); do
	d=$(dirname $f)
	djpeg $f | pnmscale -xysize 1024 768 | cjpeg -qual 75 > ${d}/1024-$f
done
IFS=$OLDIFS

saavik · 09-29-2006, 06:32 AM

got it working....

Ok, its not so beautiful but IT WORKS

find . -type f -name "*.jpg" -print | grep -v 1024_768_ | while read x; do
echo ALT:$x
pfad=`dirname $x`
dateiname=`basename $x`
echo NEU:$pfad/1024_768_$dateiname
djpeg $x | pnmscale -xysize 1024 768 | cjpeg -qual 75 >$pfad/1024_768_$dateiname
chown wwwrun $pfad/1024_768_$dateiname
chmod 600 $pfad/1024_768_$dateiname
mv $x /tempbilder/
done