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ImageMagick defines several "sub-formats" for PNG that can be used to request the encoder to write a particular PNG color-type and bit-depth. By 24-bit I assume you mean 8-bit red, green, and blue channels; for that use the png24 subformat: convert -size 1920x1080 xc:transparent png24:blank.png Note that "xc:transparent" creates an image with an alpha ...


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In the imagemagick package there is a program called mogrify that will overwrite the original image file, and another, convert, that will write to a different image file. In Linux there is another command, find, that will search (and find) all the files in a path that will fullfill the search criteria and that can execute some command with the filename ...


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Assuming two things: You have access to a reasonably modern version of GNU bash, or a compatible shell The identifier portion is always yyyy-nnnn- followed by one or more digits (in sequence) followed by something else then you can use bash string manipulation and shell wildcard expansion to accomplish what you want. Run this in a directory where the ...


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Before installing rmagic you should install imagic on your system ,installation of imagick varies according to your operating system, Then you have to install some libraries that internally supports ruby for merging image processing libraries on your system. For installing those libraries use following command For linux: sudo apt-get install ...



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