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gifsicle:tldr:a0a10
This command uses the tool "gifsicle" to apply various operations to a GIF file.
Here is a breakdown of each component of the command:
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"gifsicle": This is the command for executing the gifsicle tool.
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"-b": This flag tells gifsicle to perform the operations and save the result in the same file, overwriting the original GIF.
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"--crop ${50},${50}+${-50}x${-50}": This option is used to crop the GIF. It specifies the starting position of the crop as coordinates (50,50) relative to the top-left corner of the image. The crop size is defined as -50 pixels in width and -50 pixels in height, meaning it crops 50 pixels from both the left and top edges.
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"--scale ${0-25}": This option scales the image. The value ${0-25} means that the image will be scaled by a ratio between 0 and 25. This value can be adjusted based on your requirements.
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"--flip-horizontal": This option flips the image horizontally.
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"--rotate-90": This option rotates the image 90 degrees clockwise.
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"${path-to-input-gif}": This is the placeholder for the path to the input GIF file. You need to provide the actual file path here.
Overall, this command takes a GIF file, crops it from the top-left corner by 50 pixels, scales it between 0 and 25, flips it horizontally, and rotates it 90 degrees clockwise. The resulting modified GIF is saved back to the same input file.