1 files changed, 48 insertions, 1 deletions
diff --git a/public/nixos/burn.sh b/public/nixos/burn.sh
index 3b029a1..85ce6cd 120000..100755
--- a/public/nixos/burn.sh
+++ b/public/nixos/burn.sh
@@ -1 +1,48 @@
-../../scripts/burn-nixos.sh
-\ No newline at end of file
+#!/usr/bin/env bash
+set -Eeuo pipefail
+
+usage() {
+  red "Missing argument $1.\n"
+  cat <<EOF
+Usage:
+    burn.sh <NIXOS_URL> <USB_STICK>
+
+      Arguments:
+        NIXOS_URL         Download URL for NixOS ISO to be installed. Can be found at https://nixos.org/nixos/download.html
+        USB_STICK         File descriptor of USB stick where to burn the ISO into. Use lsblk or similar tools to get it's name.
+
+Examples:
+    Download NixOS 19.03 x86_64 minimal and burn it into stick on /dev/sdb:
+        NIXOS_URL='https://releases.nixos.org/nixos/19.03/nixos-19.03.172764.50d5d73e22b/nixos-minimal-19.03.172764.50d5d73e22b-x86_64-linux.iso'
+        burn.sh "\$NIXOS_URL" /dev/sdb
+EOF
+}
+
+NIXOS_URL="${1:-}"
+USB_STICK="${2:-}"
+ISO_PATH='/tmp/nixos.iso'
+
+[[ -z "${NIXOS_URL}" ]] && {
+  usage 'NIXOS_URL'
+  exit 2
+}
+
+[[ -z "${USB_STICK}" ]] && {
+  usage 'USB_STICK'
+  exit 2
+}
+
+yellow "Downloading NixOS ISO..."
+wget -cO "${ISO_PATH}"        "${NIXOS_URL}"
+wget -cO "${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" ||:
+blue "$(du -hs /tmp/nixos.iso)"
+sudo dd if="${ISO_PATH}" of="${USB_STICK}" status=progress
+green "Done. You can remove the USB stick ${USB_STICK} with no unmounting required."