Proxmox/misc/kernel-clean.sh

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#!/usr/bin/env bash -ex
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function header_info {
cat <<"EOF"
__ __ __ ________
/ //_/__ _________ ___ / / / ____/ /__ ____ _____
/ ,< / _ \/ ___/ __ \/ _ \/ / / / / / _ \/ __ `/ __ \
/ /| / __/ / / / / / __/ / / /___/ / __/ /_/ / / / /
/_/ |_\___/_/ /_/ /_/\___/_/ \____/_/\___/\__,_/_/ /_/
EOF
}
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set -euo pipefail
shopt -s inherit_errexit nullglob
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YW=$(echo "\033[33m")
BL=$(echo "\033[36m")
RD=$(echo "\033[01;31m")
BGN=$(echo "\033[4;92m")
GN=$(echo "\033[1;92m")
DGN=$(echo "\033[32m")
CL=$(echo "\033[m")
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BFR="\\r\\033[K"
HOLD="-"
CM="${GN}${CL}"
CROSS="${RD}${CL}"
PARTY="🎉"
current_kernel=$(uname -r)
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clear
header_info
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while true; do
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read -p "This will Clean Unused Kernel Images, USE AT YOUR OWN RISK. Proceed(y/n)?" yn
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case $yn in
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[Yy]*) break ;;
[Nn]*) exit ;;
*) echo -e "${RD}Please answer y/n${CL}" ;;
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esac
done
clear
function msg_info() {
local msg="$1"
echo -ne " ${HOLD} ${YW}${msg}..."
}
function msg_ok() {
local msg="$1"
echo -e "${BFR} ${CM} ${GN}${msg}${CL}"
}
function check_root() {
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if [[ $EUID -ne 0 ]]; then
echo -e "${CROSS}${RD}Error: This script must be ran as the root user.\n${CL}"
exit 1
else
header_info
edge_kernel
kernel_info
kernel_clean
fi
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}
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function edge_kernel() {
if [[ "$current_kernel" == *"edge"* ]]; then
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echo -e "\n${CROSS} ${RD}ERROR:${CL} Proxmox ${BL}${current_kernel}${CL} Kernel Active"
echo -e "\nAn Active PVE Kernel is required to use Kernel Clean\n"
exit 1
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fi
}
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function kernel_info() {
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if [[ "$MODE" != "PBS" ]]; then
echo -e "${YW}PVE Version: ${BL}$(pveversion)\n${CL}"
fi
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if [[ "$current_kernel" == *"pve"* ]]; then
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echo -e "${YW}Current Kernel: ${BL}$current_kernel\n${CL}"
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else
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echo -e "\n${CROSS} ${RD}ERROR: No PVE Kernel Found\n${CL}"
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exit 1
fi
}
function kernel_clean() {
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kernels=$(dpkg --list | grep 'kernel-.*-pve' | awk '{print $2}' | sort -V)
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remove_kernels=""
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for kernel in $kernels; do
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if [ "$(echo $kernel | grep $current_kernel)" ]; then
break
else
echo -e "${BL}'$kernel' ${CL}${YW}has been added to the remove Kernel list\n${CL}"
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remove_kernels+=" $kernel"
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fi
done
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msg_ok "Kernel Search Completed\n"
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if [[ "$remove_kernels" != *"pve"* ]]; then
echo -e "${PARTY} ${GN}It appears there are no old Kernels on your system. \n${CL}"
msg_info "Exiting"
sleep 2
msg_ok "Done"
else
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read -p "Would you like to remove the $(echo $remove_kernels | awk '{print NF}') selected Kernels listed above? [y/n]: " -n 1 -r
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echo
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if [[ $REPLY =~ ^[Yy]$ ]]; then
msg_info "Removing ${CL}${RD}$(echo $remove_kernels | awk '{print NF}') ${CL}${YW}old Kernels${CL}"
/usr/bin/apt purge -y $remove_kernels >/dev/null 2>&1
msg_ok "Successfully Removed Kernels"
msg_info "Updating GRUB"
/usr/sbin/update-grub >/dev/null 2>&1
msg_ok "Successfully Updated GRUB"
msg_info "Exiting"
sleep 2
msg_ok "Done"
else
msg_info "Exiting"
sleep 2
msg_ok "Done"
fi
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fi
}
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if ! command -v pveversion >/dev/null 2>&1; then
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echo -e " Switching to PBS mode"
MODE="PBS"
sleep 2
else
MODE="PVE"
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fi
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check_root