Linux kernel version checker script for Arch Linux using yay

kernelcheck.sh

#!/bin/sh
#
#Linux kernel version checker script for Arch Linux
#
kernelVariant=$(uname -r | rev | cut -d "-" -f 1 | rev)
versionDiff=$(diff <(uname -r | cut -d "-" -f 1 | cut -d "." -f 1,2,3) <(yay -Si linux$(if [ ! -z "$kernelVariant" ]; then echo "-$kernelVariant"; fi) | grep Version | cut -d ":" -f 2 | cut -d "-" -f 1 | cut -d "." -f 1,2,3 | awk '{print substr($0, 2)}') | tail -n +2)
if [ ! -z "$versionDiff" ]; then
		echo -e "Variant:\n$(if [ -z "$kernelVariant" ]; then echo "stable"; else echo $kernelVariant; fi)\n$(sed '1i\Running:' <<<"$(sed -e 's/< //g;s/> //g;s/---/Latest:/g' <<<"$versionDiff")")"
else
    echo -e "Variant:\n$(if [ -z "$kernelVariant" ]; then echo "stable"; else echo $kernelVariant; fi)\nVersion:\n$(uname -r | cut -d "-" -f 1 | cut -d "." -f 1,2,3) (Latest)"
fi