117 lines
4.1 KiB
Bash
117 lines
4.1 KiB
Bash
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#!/bin/bash
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# CheckKernel checks if Kernel was updated and not aktivated (rebooted)
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#
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# (c) GPL by Ulf Bartholomäus ub1x@gmx.net
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VERSION="$( basename $0 ) Version 0.2.3 from 12.7.2021"
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#
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# Input: 1 parameter optional ("-d" = debug and "-v" = verbose / "-D" = Distro only / "-K" = running KernelVerion / "-N" = New Kernel Version)
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# Output: text messages and a kdialog if this is installed
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# Returnvalue: 0 if Kernel OK and 10 if Kernel is changed
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#
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# ToDo: Check if initrd and vmlinuz exists
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# cat /etc/issue
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# cat /proc/version
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# Error: inxi - hangs in a script:
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# MyDistro="$( eval inxi -xSz | grep Distro: | awk -F'Distro: ' '{print $2}' )"
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# https://github.com/smxi/inxi/issues/181
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#
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# Changes:
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# 0.2.3: Fix error => update in case only one Kernel is avaialble
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# 0.2.2: Fix error => new Kernel update: replace initrd with vmlinuz check
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# 0.2.1: added -D -K and -N option
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# Fixed error and exit with more than one /boot/initrd-* file
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# 0.2.0: InitKernel und VmlzKernel entfernt,
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# [ $( ls -1 /boot/ | grep initrd- | wc -l ) -gt 1 ] && echo "** Error" || ls -1 /boot/ | grep initrd- | cut -d '-' -f 2,3,4
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# Some small changes and simplifications
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# 0.1.9: NewKernel erneut angepasstsys
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# 0.1.8: "==" -> "=" sowie kleinere Shönheitskorrekturen - sowie NewKernel mit awk statt cut
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# 0.1.7: remove "CheckKernel.sh: Zeile 33: lsb_release: Kommando nicht gefunden."
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# and => -d = debaug
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# 0.1.6: if "lsb_release" not available use "cat /etc/*-release" info
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# 0.1.5: Fix trouble if NewKernel is empty
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# 0.1.4: Fix some errors
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# 0.1.3: Fix running and new kernel are equal but shown as different
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# 0.1.2: Remove "initrd-" from InitKernel
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# 0.1.1: Add Kernel Info in kdialog
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# 0.1.0: exchange some direct calls against definition
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# add check if new Kernel is in GRUB Config file
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# 0.0.7: read Kernel version from menu.lst
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# 0.0.6: add verbose mode
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# 0.0.5: syslog messages
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# 0.0.4: returnvalue if Kernel is changed is 10
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# 0.0.3: hostname in kdialog title
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# 0.0.2: kdialog output
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# 0.0.1: generation
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#
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DEBUG=""
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MyDistro=""
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MyKernel=""
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NewKernel=""
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InitKernel=""
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if [ $# -gt 0 ] && [ "$1" = "-d" ] ; then
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DEBUG="1"
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echo -e "\t<${VERSION}>"
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shift
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fi
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MyDistro="$( cat /proc/version )"
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MyDistro="${MyDistro/*;/}" # remove first string till ";"
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MyDistro="${MyDistro/)*/}" # remove anything behind ")"
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MyDistro="${MyDistro/# /}" # remove blanks in the beginning
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if [ $# -gt 0 ] && [ "$1" = "-D" ] ; then
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echo "${MyDistro}"
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exit
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fi
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MyKernel="$( uname -r )"
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if [ $# -gt 0 ] && [ "$1" = "-K" ] ; then
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echo "${MyKernel}"
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exit
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fi
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InitKernel="$( ls -1tr /boot/ | grep 'vmlinuz-' )"
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if [ $( echo "${InitKernel}" | wc -l ) -ge 1 ] ; then
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# If To much Kernels - exit
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# use only the last listed kernel (hopfully the newest)
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NewKernel="${InitKernel/*vmlinuz-/}"
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else
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# no "vmlinuz" entry
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[ ${DEBUG} ] && echo "** Error: /boot/vmlinuz-* is missing <${InitKernel}>"
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# exit 10
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NewKernel="Missing /boot/vmlinuz-*"
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fi
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if [ $# -gt 0 ] && [ "$1" = "-N" ] ; then
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echo "${NewKernel}"
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exit
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fi
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if [ ${DEBUG} ] ; then
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echo -e "* Debug Info *\n\t MyDistro=${MyDistro},\n\t MyKernel=${MyKernel},\n\t InitKernel=${InitKernel},\n\t NewKernel=${NewKernel}!"
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[ "x${MyKernel}" = "x${NewKernel}" ] && echo -e "*\t(${MyKernel}) = (${NewKernel})" || echo -e "***\t(${MyKernel}) != ${NewKernel} !!!"
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echo "*"
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fi
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if [ "x${MyKernel}" = "x${NewKernel}" ] ; then
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if [ $# -gt 0 ] && [ "$1" = "-v" ] ; then
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echo -e "\t*** Distro: ${MyDistro} \tKernel ${MyKernel} \t$( date "+%X / %d.%m.%Y" ) \t*** Kernel OK ***"
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else
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echo "*** Kernel OK (${MyKernel})";
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fi
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else
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if ( [ $# -gt 0 ] && [ "$1" == "-v" ] ) ; then
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echo -e "\t*** Distro: ${MyDistro} \tKernel ${MyKernel} \t$( date "+%X / %d.%m.%Y" ) \t*** NEW Kernel ${NewKernel}!!! ***"
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else
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MsgTxt="*** Kernel Updated from ${MyKernel} to ${NewKernel}! => please reboot"
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echo "${MsgTxt}";
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logger -t $( basename $0 ) "${MsgTxt}"
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if [ $# -eq 0 ] && [ -e $( which kdialog 2>> /dev/null ) ] ; then
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kdialog --title "*** $( hostname ) ***" --error "${MsgTxt}" >> /dev/null 2>> /dev/null
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fi
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fi
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fi
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