automate kernel updates

[fishpm-anu]

How could I automate the kernel updates, such as a script like;

#!/bin/bash
#upgrading script apple linux T2 Kernel
#place script in /etc/cron.weekly
exec 3>&1 4>&2
trap 'exec 2>&4 1>&3' 0 1 2 3
exec 1>/var/log/t2-kernel-update.log 2>&1

set -e

cd /tmp
latest=$(curl -sL https://github.com/t2linux/T2-Ubuntu-Kernel/releases/latest/ | grep "<title>Release" | awk -F " " '{print $2}' )
latestk=$(echo $latest | cut -c 2- | cut -d "-" -f 1 | awk '{print $1"-t2"}')
currentk=$(uname -r)

if [ \( $latestk != $currentk \) ]; then
	
	wget -rq -nd -l 1 -A linux-headers-*_amd64.deb,linux-image-*_amd64.deb https://github.com/t2linux/T2-Ubuntu-Kernel/releases/tag/$latest

	if [ -f linux-headers-*_amd64.deb -a -f linux-image-*_amd64.deb ]; then
	#install
	echo installing new kernel $latest
	dpkg -i linux-headers-*_amd64.deb
	dpkg -i linux-image-*_amd64.deb
	shutdown -r 02:00 "reboot scheduled for the next 2am to update runnning kernel"
	rm -f linux-headers-*_amd64.deb linux-image-*_amd64.deb robots.txt*
	fi
fi

[AdityaGarg8]

I was thinking about a script as well, but I don't get time for the same.

In that, you though have to run the script manually, but you can easily upgrade.

If you can develop, PRs are welcome.

[fishpm-anu]

I was thinking about a script as well, but I don't get time for the same.

In that, you though have to run the script manually, but you can easily upgrade.

If you can develop, PRs are welcome.

see my first version in my discussion

[fishpm-anu]

I will write a script then, and it can just be placed in , /etc/cron.monthly

[fishpm-anu]

apt install ./linux-headers-*_amd64.deb
	apt install ./linux-image-*_amd64.deb

can't use wildcards like that in apt install ./linux-headers-*_amd64.deb....
need to use dpkg -i linux-headers-*_amd64.deb .....

[fishpm-anu]

try wget on its own woth -q off. set $latest first ofcourse. works for me.

[AdityaGarg8]

#!/bin/bash
#upgrading script apple linux T2 Kernel
#place script in /etc/cron.weekly
exec 3>&1 4>&2
trap 'exec 2>&4 1>&3' 0 1 2 3
exec 1>/var/log/t2-kernel-update.log 2>&1

set -e

cd /tmp
latest=$(curl -sL https://github.com/t2linux/T2-Ubuntu-Kernel/releases/latest/ | grep "<title>Release" | awk -F " " '{print $2}' )
latestk=$(echo $latest | cut -c 2- | cut -d "-" -f 1 | awk '{print $1"-t2"}')
currentk=$(uname -r)
latestkver=$(echo $latest | cut -d "v" -f 2)

if [ \( $latestk != $currentk \) ]; then
	
	curl -L https://github.com/t2linux/T2-Ubuntu-Kernel/releases/download/${latest}/linux-headers-${latestk}_${latestkver}_amd64.deb > headers.deb
	curl -L https://github.com/t2linux/T2-Ubuntu-Kernel/releases/download/${latest}/linux-image-${latestk}_${latestkver}_amd64.deb > image.deb

	if [ -f headers.deb -a -f image.deb ]; then
	#install
	echo "Installing new kernel $latest"
	apt install ./headers.deb
	apt install ./image.deb
	shutdown -r 02:00 "reboot scheduled for the next 2am to update runnning kernel"
	rm -f headers.deb image.deb
	#uninstall old kernel
		if [[ $(uname -r | cut -d "-" -f 2) = t2 ]]
		then
		dpkg -r linux-headers-$(uname -r)
		dpkg -r linux-image-$(uname -r)
		fi
	fi
fi

[AdityaGarg8]

This works for me

[AdityaGarg8]

BTW, do we really need scheduled shut down here?

[AdityaGarg8]

#!/bin/bash
#upgrading script apple linux T2 Kernel
#place script in /etc/cron.weekly

if [ $USER != root ]
then
chmod 755 $0
sudo $0 $1
exit 0
fi

if [[ $1 != -v ]]
then
exec 3>&1 4>&2
trap 'exec 2>&4 1>&3' 0 1 2 3
exec 1>/var/log/t2-kernel-update.log 2>&1
fi

set -e

cd /tmp

use_lts=false
lts_version=5.15

if [[ $use_lts != true ]]
then
latest=$(curl -sL https://github.com/t2linux/T2-Ubuntu-Kernel/releases/latest/ | grep "<title>Release" | awk -F " " '{print $2}' )
else
getkernelver=$(curl -sL https://github.com/t2linux/T2-Ubuntu-Kernel/releases | grep "{{ urlEncodedRefName }}" | grep -v "generic" | grep v${lts_version} | cut -d "{" -f 3 | cut -c 25- | head -1)
latest=${getkernelver::-76}
fi

latestkver=$(echo $latest | cut -d "v" -f 2)
latestk=$(echo $latest | cut -c 2- | cut -d "-" -f 1 | awk '{print $1"-t2"}')
currentk=$(uname -r)

if [ \( $latestk != $currentk \) ]; then
	
	curl -L https://github.com/t2linux/T2-Ubuntu-Kernel/releases/download/${latest}/linux-headers-${latestk}_${latestkver}_amd64.deb > headers.deb
	curl -L https://github.com/t2linux/T2-Ubuntu-Kernel/releases/download/${latest}/linux-image-${latestk}_${latestkver}_amd64.deb > image.deb

	if [ -f headers.deb -a -f image.deb ]; then
	#install
	echo "Installing new kernel $latest"
	apt install ./headers.deb
	apt install ./image.deb
	#shutdown -r 02:00 "reboot scheduled for the next 2am to update runnning kernel"
	rm -f headers.deb image.deb
	#uninstall old kernel
		if [[ $(uname -r | cut -d "-" -f 2) = t2 ]]
		then
		dpkg -r linux-headers-$(uname -r)
		dpkg -r linux-image-$(uname -r)
		fi
	fi
else
echo "Kernel is up to date"
fi

[AdityaGarg8]

This is the final version which I could develop. It takes into account the LTS versions

[AdityaGarg8]

Closing this since kernels are now hosted on the apt repo. And thanks for this work, it helped a lot of people for a long time!