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Gabriel Arazas b088086b06 Merge evergreen notes into the notebook

Now, it's all under the notebook umbrella. Seems to be appropriate as it
is just my notes after all.

I also updated some notes from there. I didn't keep track of what it is
this time. Something about more learning notes extracted from my
"Learning how to learn" course notes and then some. Lack of time and
hurriness just makes it difficult to track but it should be under
version control already.

2021-07-21 16:28:07 +08:00

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Command line: ImageMagick

Synopsis
Subcommands
Examples

The swiss army knife for picture manipulation in the command line. For future reference, this mainly use v7 which has Git-style interface (which is way better, IMO).

Synopsis

magick [subcommand [subcommand_options...]]

Subcommands

convert - resize images, convert between formats, apply filter effects
identify - print information on the image
mogrify - similar to convert except modifies the original file

Examples

A comprehensive tool calls for a comprehensive introduction.

Resize an image by half

magick resize $INPUT -resize 50% $OUTPUT

You can find out various geometry options from the documentation.

Print the information

magick identify $INPUT

Use ImageMagick as a color picker

You can use any tool that can pipe an image to other tools.

maim --select --shader crosshair --tolerance 0 --hidecursor | magick convert - -resize 1x1\! -format '%[hex:p{0,0}]' info:-

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