Mogrify all files in directory, and add suffix.

[akobylarek]

Version: 6.71-0
Unix

I am trying to resize all pngs in a directory, there a couple hundred so I don't really want to do it by hand.

I want to keep the old files, and I want the new files to append a suffix on the end.

TempImage.png creates TempImage_Resized.png

Any help on how to do this would be greatly appreciated.

[fmw42]

the closest I can come is to create two directories: tmp1 has the images and tmp2 is empty

cd tmp1
mogrify -path /Users/fred/tmp2/ -format "Resized.png" -resize 50% *.png

The results will be originalimagename.Resized.png and placed in tmp2. (or leave off the path and they will end up in tmp1)


see mogrify at
http://www.imagemagick.org/Usage/basics/#mogrify
http://www.imagemagick.org/Usage/basics ... fy_convert
http://www.imagemagick.org/Usage/basics/#mogrify_not

[glennrp]

This uses convert, not mogrify, but it should work on Unix/Linux:

Code: Select all

for x in *.png
do
root=`echo $x | sed -e "s/.png//"`
convert $x -resize 200x150 ${root}_Resized.png
done

The back-ticks ( ` ) are hard to see in the listing; don't omit them!

Here's a mogrify command I use sometimes:

Code: Select all

mogrify -resize 200x150 -format PNG *.png

In this example the original files are filename.png and the thumbnails are filename.PNG

[fmw42]

Here is an improvement that gets what you want.


cd /Users/fred/tmp1
mogrify -path /Users/fred/cyclops2/ -format "_Resized.jpg" -resize 50% *.png
cd /Users/fred/tmp2
filelist=$(ls)
for file in $filelist; do
mv "$file" "$(echo "$file" | sed 's/._/_/g' )"
done

[anthony]

I didn't know morgify -format would replace more than just the suffix! --nice

[fmw42]

I didn't know morgify -format would replace more than just the suffix! --nice

Neither did I until I experimented. But I was puzzled and unable to achieve any results using %o as you discussed at http://www.imagemagick.org/Usage/basics ... fy_convert

"Mogrify itself could modify the filename (using "-format" and "-path" settings) to generate a new filename accessable as '%o', in "convert" that is the same as the '%i' escape."

can you provide a working example? have I misunderstood what you are trying to say here?

[anthony]

I didn't know morgify -format would replace more than just the suffix! --nice

Neither did I until I experimented. But I was puzzled and unable to achieve any results using %o as you discussed at http://www.imagemagick.org/Usage/basics ... fy_convert

"Mogrify itself could modify the filename (using "-format" and "-path" settings) to generate a new filename accessible as '%o', in "convert" that is the same as the '%i' escape."

can you provide a working example? have I misunderstood what you are trying to say here?

Hmm I'm a little puzzled myself looking back on it. I'll remove that comment for now form IM examples, at least until it comes back to me, and I can write it more distinctly.

Seems I also need a good link to the actual percent escape properties list page there.

[fmw42]

http://www.imagemagick.org/script/escape.php

[akobylarek]

cd /Users/fred/tmp1
mogrify -path /Users/fred/cyclops2/ -format "_Resized.jpg" -resize 50% *.png
cd /Users/fred/tmp2
filelist=$(ls)
for file in $filelist; do
mv "$file" "$(echo "$file" | sed 's/._/_/g' )"
done

Brilliant, it worked perfectly. Thank you so much.