Update script for pve-edge-kernel

update_pve-edge-kernel.sh

#!/bin/bash

set +m
shopt -s lastpipe

DEBUG=0
RESTART=0
INDEX=0

while getopts ":dr" options; do
    case "${options}" in
        d)
            DEBUG=1
            ;;
        r)
            RESTART=1
            ;;
        *)
            echo "Use -r argument to automaticaly reboot machine after installing new kernel version"
            echo "Use -d argument to initiate DEBUG MODE. This mode WON'T download nor install new update. This is for debugging only."
            exit 1
            ;;
    esac
done

KERNEL=$(uname -r)
echo "Running kernel version: $KERNEL"

# Get newest tag from GitHub
NEWEST=$(wget -qO- https://api.github.com/repos/fabianishere/pve-edge-kernel/tags | jq -r '[.[].name][0]')
echo "Found version: $NEWEST"

for version in $(dpkg --list | grep pve-edge-kernel | awk '{print $3}'); do
    if [ "$NEWEST" == "$KERNEL" ] || [ "$NEWEST" == "$version" ]; then
        echo "Update not needed. This version is already installed."
        exit 0
    fi
done

DIR=$(mktemp -d -t pve-kernel-edge-XXXXXXXX)
cd "$DIR"

# Download and parse kernel information from GitHub
wget -qO- https://api.github.com/repos/fabianishere/pve-edge-kernel/releases | jq -r --arg NEWEST "$NEWEST" '[.[] | select(.tag_name | index($NEWEST))][0].assets[] | select(.name | index("lake") | not) | select(.name | index("zen") | not).browser_download_url' | while read object; do
    if [ $DEBUG -eq 0 ]; then
        wget -q "$object" --show-progress
    else
        echo "DEBUG: Should download $object"
    fi
    let INDEX++
done

# Install kernel
if [ $INDEX -gt 0 ]; then
    echo "Installing new kernel"
    
    if [ $DEBUG -eq 0 ]; then
        dpkg -i linux* pve-*
    else
        echo "DEBUG: Actually not installing"
    fi
fi

# Cleanup temp
if [ -d "$DIR" ]; then
    rm -rf "$DIR"
fi

# Reboot machine if kernel was updated and user requested it
if [ $INDEX -gt 0 ] && [ $RESTART -gt 0 ]; then
    echo "Rebooting machine"
    
    if [ $DEBUG -eq 0 ]; then
        reboot
    else
        echo "DEBUG: Actually not restarting"
    fi
fi