From 66ee242d8a4c893a48e95b71a1d3e520a029088d Mon Sep 17 00:00:00 2001 From: Christoph Date: Sun, 30 Dec 2018 14:36:24 +0100 Subject: [PATCH] Add script 'remove_old_kernel.sh'. --- remove_old_kernel.sh | 361 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 361 insertions(+) create mode 100755 remove_old_kernel.sh diff --git a/remove_old_kernel.sh b/remove_old_kernel.sh new file mode 100755 index 0000000..21fc269 --- /dev/null +++ b/remove_old_kernel.sh @@ -0,0 +1,361 @@ +#!/usr/bin/env bash + +script_name="$(basename $(realpath $0))" +working_dir="$(dirname $(realpath $0))" + +conf_file="${working_dir}/conf/${script_name%%.*}.conf" + +LOCK_DIR="/tmp/$(basename $0).$$.LOCK" +log_file="${LOCK_DIR}/${script_name%%.*}.log" + + +# ---------- +# Base Function(s) +# ---------- + +clean_up() { + + # Perform program exit housekeeping + rm -rf "$LOCK_DIR" + blank_line + exit $1 +} + +echononl(){ + if $terminal ; then + echo X\\c > /tmp/shprompt$$ + if [ `wc -c /tmp/shprompt$$ | awk '{print $1}'` -eq 1 ]; then + echo -e -n " $*\\c" 1>&2 + else + echo -e -n " $*" 1>&2 + fi + rm /tmp/shprompt$$ + fi +} + +fatal(){ + echo "" + if $terminal ; then + echo -e " [ \033[31m\033[1mFatal\033[m ] $*" + else + echo -e " [ Fatal ] $*" + fi + echo "" + if $terminal ; then + echo -e " \033[1mScript terminated\033[m.." + else + echo -e " Script terminated.." + fi + echo "" + rm -rf $LOCK_DIR + exit 1 +} + +error (){ + echo "" + if $terminal ; then + echo -e " [ \033[31m\033[1mError\033[m ] $*" + else + echo " [ Error ] $*" + fi + echo "" +} + +warn (){ + if $LOGGING || $terminal ; then + echo "" + if $terminal ; then + echo -e " [ \033[33m\033[1mWarn\033[m ] $*" + else + echo " [ Warn ] $*" + fi + echo "" + fi +} + +info (){ + if $LOGGING || $terminal ; then + echo "" + if $terminal ; then + echo -e " [ \033[32m\033[1mInfo\033[m ] $*" + else + echo " [ Info ] $*" + fi + echo "" + fi +} + +ok (){ + if $LOGGING || $terminal ; then + echo "" + if $terminal ; then + echo -e " [ \033[32m\033[1mOk\033[m ] $*" + else + echo " [ Ok ] $*" + fi + echo "" + fi +} + +echo_done() { + if $terminal ; then + echo -e "\033[75G[ \033[32mdone\033[m ]" + fi +} +echo_ok() { + if $terminal ; then + echo -e "\033[75G[ \033[32mok\033[m ] " + fi +} +echo_failed(){ + if $terminal ; then + echo -e "\033[75G[ \033[1;31mfailed\033[m ]" + fi +} +echo_skipped() { + if $terminal ; then + echo -e "\033[75G[ \033[33m\033[1mskipped\033[m ]" + fi +} +echo_wait(){ + if $terminal ; then + echo -en "\033[75G[ \033[5m\033[1m...\033[m ]" + fi +} + +blank_line() { + if $terminal ; then + echo "" + fi +} + +detect_os () { + + if $(which lsb_release > /dev/null 2>&1) ; then + + os_dist="$(lsb_release -i | awk '{print tolower($3)}')" + os_version="$(lsb_release -r | awk '{print tolower($2)}')" + os_codename="$(lsb_release -c | awk '{print tolower($2)}')" + + if [[ "$os_dist" = "debian" ]]; then + if $(echo "$os_version" | grep -q '\.') ; then + os_version=$(echo "$os_version" | cut --delimiter='.' -f1) + fi + fi + + elif [[ -e "/etc/os-release" ]]; then + + . /etc/os-release + + os_dist=$ID + os_version=${VERSION_ID} + + fi + + # remove whitespace from os_dist and os_version + os_dist="${os_dist// /}" + os_version="${os_version// /}" + +} + +# ---------- +# - Jobhandling +# ---------- + +# - Run 'clean_up' for signals SIGHUP SIGINT SIGTERM +# - +trap clean_up SIGHUP SIGINT SIGTERM + +# - Create lock directory '$LOCK_DIR" +# +mkdir "$LOCK_DIR" + + +# ---------- +# - Some checks .. +# ---------- + +# - Running in a terminal? +# - +if [[ -t 1 ]] ; then + terminal=true +else + terminal=false +fi + +# - Detedt Os +# - +detect_os +if [[ "${os_dist,,}" != ubuntu ]] ; then + fatal "Linux Distribution '${os_dist}' is NOT supported (only Ubuntu). Exiting now ..!" +fi + +# - Give your default values here +# - +LOGGING=false +BATCH_MODE=false + + + +# ========== +# - Begin Main Script +# ========== + +# ---------- +# - Headline +# ---------- + +if $terminal ; then + echo "" + echo -e "\033[1m----------\033[m" + echo -e "\033[32m\033[1mRunning script \033[m\033[1m$script_name\033[32m .. \033[m" + echo -e "\033[1m----------\033[m" +fi + + +# ---------- +# - Some pre-script tasks .. +# ---------- + +if $terminal ; then + echo "" + echo "" + echo -e " \033[1mDoing some pre-script tasks ..\033[m" + echo "" +fi + +echononl "Detecting not fully deinstalled kernel packages (rc).." + +rc_kernel_pakages="$(dpkg -l linux* | grep -E "^rc" | awk '{print$2}')" + +if [[ $? -eq 0 ]] ; then + echo_ok +elif [[ -z "$rc_kernel_pakages" ]]; then + echo_ok +else + echo_failed + fatal "Detecting not fully deinstalled kernel packages failed." +fi + +blank_line +echononl "Get actual used kernel version.." +kernel_version="$(uname -r | grep -o -E "^[[:digit:]]{1}\.[[:digit:]]{1,3}\.[[:digit:]]{1,3}\-[[:digit:]]{1,3}")" +if [[ $? -eq 0 ]] && [[ -n "$kernel_version" ]]; then + echo_ok +else + echo_done +fi + + +echononl "Detecting old not used kernels.." +if [[ -f "/var/run/reboot-required" ]]; then + unused_kernel_pakages="" + warn "Reboot befor removing unused kernels.." + echo_skipped +else + unused_kernel_pakages="$(dpkg -l linux* | grep -E "^ii" | awk '{print$2}' | grep -v "$kernel_version" | grep -E "linux\-(image|modules|headers).*\-[[:digit:]]{1}\.[[:digit:]]{1,3}\.[[:digit:]]{1,3}\-[[:digit:]]{1,3}")" + if [[ $? -eq 0 ]] ; then + echo_ok + elif [[ -z "$unused_kernel_pakages" ]]; then + echo_ok + else + echo_failed + fatal "Detecting old unused kernel packages failed." + fi +fi + + + +if $terminal && ! $BATCH_MODE ; then + echo "" + echo "" + echo -e " \033[32m\033[1mThe following Packages are detected for removing:\033[m" + echo "" + + echo -e " \033[1mNot fully deinstalled Packages:\033[m" + + if [[ -z "$rc_kernel_pakages" ]]; then + echo -e " \033[33m- No Packages found -\033[m" + else + for _package in $rc_kernel_pakages ; do + echo -e " ${_package}" + done + fi + + echo "" + echo -e " \033[1mUnused kernel packages:\033[m" + if [[ -z "$unused_kernel_pakages" ]]; then + echo -e " \033[33m- No Packages found -\033[m" + else + for _package in $unused_kernel_pakages ; do + echo -e " ${_package}" + done + fi + + if [[ -z "$rc_kernel_pakages" ]] && [[ -z "$unused_kernel_pakages" ]] ; then + info "No package for deletion found." + clean_up 0 + fi + + echo "" + echononl "Remove not fully deinstalled kernel packages? [\033[1myes/no\033[m]: " + read OK + while [[ "${OK,,}" != "yes" ]] && [[ "${OK,,}" != "no" ]] ; do + echononl "\033[33mWrong entry!\033[m [\033[1myes/no\033[m]: " + read OK + done + [[ "${OK,,}" = "yes" ]] || rc_kernel_pakages="" + + echononl "Removing unsed kernel packages? [\033[1myes/no\033[m]: " + read OK + while [[ "${OK,,}" != "yes" ]] && [[ "${OK,,}" != "no" ]] ; do + echononl "\033[33mWrong entry!\033[m [\033[1myes/no\033[m]: " + read OK + done + [[ "${OK,,}" = "yes" ]] || unused_kernel_pakages="" + +fi + +blank_line +echononl "Removing not fully deinstalled kernel packages.." +if [[ -z "$rc_kernel_pakages" ]] ; then + echo_skipped +else + echo_wait + apt-get remove --purge -y $rc_kernel_pakages > $log_file 2>&1 + if [[ $? -eq 0 ]] ; then + echo_ok + else + echo_failed + error "$(cat "$log_file")" + fatal "Removing not fully deinstalled kernel packages failed." + fi +fi + +echononl "Removing unsed kernel packages.." +if [[ -z "$unused_kernel_pakages" ]] ; then + echo_skipped +else + echo_wait + apt-get remove --purge -y $unused_kernel_pakages > $log_file 2>&1 + if [[ $? -eq 0 ]] ; then + echo_ok + else + echo_failed + error "$(cat "$log_file")" + fatal "Removing unused kernel packages failed." + fi +fi + +echononl "Update grub boot manager.." +update-grub > $log_file 2>&1 +if [[ $? -eq 0 ]] ; then + echo_ok +else + echo_failed + error "$(cat "$log_file")" +fi + +blank_line +clean_up 0 +