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#!/usr/bin/env bash
set -Eeuo pipefail
NIXOS_URL="$1"
USB_STICK="$2"
ISO_PATH='/tmp/nixos.iso'
yellow "Downloading NixOS ISO..."
wget -O "${ISO_PATH}" "${NIXOS_URL}"
wget -O "${ISO_PATH}.sha256" "${NIXOS_URL}.sha256"
diff <(sha256sum "${ISO_PATH}" | awk '{print $1}') <(awk '{print $1}' < "${ISO_PATH}.sha256") || {
red "SHA256 didn't match!"
exit 1
}
green "Done. SHA256 match."
yellow "Writing ISO image to ${USB_STICK}. We'll need sudo for it..."
umount "${USB_STICK}1" ||:
ls -lahp --color "${ISO_PATH}"
sudo dd if="${ISO_PATH}" of="${USB_STICK}" status=progress
green "Done. You can remove the USB stick ${USB_STICK} with no unmounting required."
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