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sayhello_to_the_world
Joined: 24 Dec 2012 Posts: 77
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Posted: Sun 01 Feb 2015, 12:58 Post subject:
How to batch-resize images with Imagemagic on a Linux-box? |
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hello dear puppy-experts
i want to resize images that i have.
at the moment they do have the following size
4608 x 3072 pixel
how to limit the size:
how can i do this 50 images - on a single step"!?
Is this possible. which tool can i use?
-batch programme on linux
-digicam
-gimp
there are several ways to do this for a bunch of pictures:
first, i installed imagemagick on my linux box .
put all the pictures we want to reduce in a folder.
from the terminal console we cd to folder with the pictures.
then type the command:
Code: | mogrify -resize "460x306>" -quality 75 *.jpg
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In this case I reduced the pictures to 460x306 pixels
see the results
Code: |
martin@linux-70ce:~/Bilder/books_1/sample_1/rework> mogrify -resize "460x306>" -quality 75 *.jpg
mogrify: unable to open image `*.jpg': Datei oder Verzeichnis nicht gefunden @ error/blob.c/OpenBlob/2643.
martin@linux-70ce:~/Bilder/books_1/sample_1/rework>
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see the data that resides in the folder:
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-rw-r--r-- 1 martin users 3537095 30. Sep 2011 DSC_0402.JPG
-rw-r--r-- 1 martin users 3406810 30. Sep 2011 DSC_0405.JPG
-rw-r--r-- 1 martin users 3400306 30. Sep 2011 DSC_0412.JPG
-rw-r--r-- 1 martin users 3295822 30. Sep 2011 DSC_0413.JPG
-rw-r--r-- 1 martin users 3356603 30. Sep 2011 DSC_0414.JPG
-rw-r--r-- 1 martin users 3716554 30. Sep 2011 DSC_0415.JPG
-rw-r--r-- 1 martin users 3186194 30. Sep 2011 DSC_0416.JPG
-rw-r--r-- 1 martin users 3959131 30. Sep 2011 DSC_0417.JPG
-rw-r--r-- 1 martin users 3534784 30. Sep 2011 DSC_0418.JPG
-rw-r--r-- 1 martin users 3517244 30. Sep 2011 DSC_0419.JPG
-rw-r--r-- 1 martin users 3766772 30. Sep 2011 DSC_0420.JPG
-rw-r--r-- 1 martin users 3576426 30. Sep 2011 DSC_0421.JPG
-rw-r--r-- 1 martin users 3379235 30. Sep 2011 -- 1 martin users 41398478 28. Jan 21:59 re_DSC_0386.xcf
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any idea why it fails
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Flash
Official Dog Handler

Joined: 04 May 2005 Posts: 13653 Location: Arizona USA
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Posted: Sun 01 Feb 2015, 13:36 Post subject:
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You're not using Puppy Linux for this, are you?
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SFR

Joined: 26 Oct 2011 Posts: 1802
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Posted: Sun 01 Feb 2015, 14:57 Post subject:
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sayhello_to_the_world wrote: | Code: | mogrify -resize "460x306>" -quality 75 *.jpg |
Code: | -rw-r--r-- 1 martin users 3537095 30. Sep 2011 DSC_0402.JPG |
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jpg ≠ JPG
Linux is case-sensitive.
Greetings!
_________________ [O]bdurate [R]ules [D]estroy [E]nthusiastic [R]ebels => [C]reative [H]umans [A]lways [O]pen [S]ource
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Fossil

Joined: 13 Dec 2005 Posts: 1172 Location: Gloucestershire, UK.
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Posted: Sun 01 Feb 2015, 15:08 Post subject:
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'If' you were using Puppy Linux you could try here: http://murga-linux.com/puppy/viewtopic.php?t=81819
Or, search the Graphics sub-forum for other available programs. Or, download XNview with batch-resizing built in.
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Semme

Joined: 07 Aug 2011 Posts: 8427 Location: World_Hub
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Posted: Sun 01 Feb 2015, 15:14 Post subject:
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IM's the best, case sensitive's the answer. Like I've said, most peeps try once, fail and quit. ZERO tenacity.
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