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Eton Notes
Version 12.0
Download a .deb for AMD64
AMD64: Download .tar.gz
Or install it from the command line:
$ CPU=$(dpkg-architecture -q DEB_HOST_ARCH_CPU)
$ wget https://github.com/hydraulic-software/eton-desktop/releases/latest/download/hydraulic-eton_12.0_${CPU}.deb
$ sudo apt install ./hydraulic-eton_12.0_${CPU}.deb