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May 19, 2015 - A Look At The New Commandlinefu
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Resize images with mogrify with lots of options

Terminal - Resize images with mogrify with lots of options
find . -name '*.jpg' -o -name '*.JPG' | xargs -I{} mogrify -resize 1024">" -quality 40 {}
2013-06-20 15:20:29
Functions: find xargs
Resize images with mogrify with lots of options

First use find to find all the images that end with jpg or JPG in the current dir and all its children.

Then pipe that to xargs. The -I{} makes it so spaces in filenames don't matter.

The 1024">" makes it so it takes any image greater in dimension than 1024 and resizes them to 1024 width, but keeping aspect ratio on height.

Then it sets the image quality to 40.

Piping it through xargs means you avoid the file count limit, and you could run this on your entire file system if you wanted.


There are 4 alternatives - vote for the best!

Terminal - Alternatives
find . -name '*.jpg' -o -name '*.JPG' -print0 | xargs -0 mogrify -resize 1024">" -quality 40
2013-06-20 16:09:41
User: minnmass
Functions: find xargs

The "find $stuff -print0 | xargs -0 $command" pattern causes both find and xargs to use null-delineated paths, greatly reducing the probability of either hiccuping on even the weirdest of file/path names.

It's also not strictly necessary to add the {} at the end of the xargs command line, as it'll put the files there automatically.

Mind, in most environments, you could use find's "-exec" option to bypass xargs entirely:

find . -name '*.jpg' -o -name '*.JPG' -exec mogrify -resize 1024">" -quality 40 {} +

will use xargs-like "make sure the command line isn't too long" logic to run the mogrify command as few times as necessary (to run once per file, use a ';' instead of a '+' - just be sure to escape it properly).

find . -name '*.[Jj][Pp][Gg]' -exec mogrify -resize 1024">" -quality 40 {} \;
2013-06-21 13:27:25
User: hugme
Functions: find

The find command can do this on it's own. This is a shorter faster version, it also includes more advanced regex (it will find .Jpg etc). Find doesn't need a pipe, you can run it directly from the command.

Know a better way?

If you can do better, submit your command here.

What others think

The option

-iname '*.jpg'

may be used instead of

-name '*.jpg' -o -name '*.JPG'

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Comment by femalemalls11 127 weeks ago

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