On device jetpack upgrade for jetson (from L4T 32.6 -> 32.7)

upgrade_jetpack.sh

#!/usr/bin/env bash

set -x

LT4_MAJOR=32
LT4_MINOR_OLD=6
LT4_MINOR=7

if [ "$EUID" -ne 0 ]
  then echo "Please run as root"
  exit
fi

jetson_clocks # speed things up

# Check disk space
disk_space_byte=$(df $PWD | awk '/[0-9]%/{print $(NF-2)}')
disk_space_megabyte=$(( disk_space_byte / 1000 ))
echo "** Free space : $disk_space_megabyte Mo **"
if [[ $disk_space_megabyte -lt 5000 ]]; then 
    echo "Not enough disk space (need 5Go)"
    exit 1
fi

# Upgrade
apt update; apt upgrade -y;
echo "The device should be rebooted before continuing (the script is paused)"
sleep 20

# Actual upgrade
# https://docs.nvidia.com/jetson/l4t/index.html#page/Tegra%2520Linux%2520Driver%2520Package%2520Development%2520Guide%2Fquick_start.html%23wwpID0EXHA
sed -i "s/r$LT4_MAJOR.$LT4_MINOR_OLD /r$LT4_MAJOR.$LT4_MINOR /g" /etc/apt/sources.list.d/nvidia-l4t-apt-source.list
apt update; apt upgrade -y;
echo "The device can be rebooted now"