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linux-cleanup.txt
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#!/bin/bash
################################################
# Cleanup Linux Installation
# Author: Thomas Burger
# Version 2.0
# Date: 2022-08-10
# NO WARRANTIES. ABSOLUTELY USE AT OWN RISK!
# Version 2.0 implements a new method - script
# works read only in dry run by default. Use
# -e parameter to execute the changes.
################################################
### PARAMETERS
while [ $# -gt 0 ]
do
case "$1" in
# Option -e for "execute"
-e) execute="true"; shift;;
# f�r alle anderen Optionen:
-*)
echo >&2 \
"usage: linuxCleanup.sh [-e]"
exit 1;;
# terminate while loop
*) break;;
esac
shift
done
### Cleaning up
clear
################################################
# Configuration section
# cleanup directories
cleanVarLog="yes"
cleanVarLogJournal="yes"
cleanVarLogSave="yes"
cleanVarLogJournalSave="yes"
cleanVarCacheE2fsck="yes"
cleanVarLibClamav="yes"
cleanEtcAptCache="yes"
# clean old kernels and boot
cleanOldKernels="yes"
# cleanup config files from removed packages
cleanRemovedConfigFiles="yes"
# cleanup via apt-command
cleanApt="yes"
# reduce the journal (e.g. truncate it)
reduceJournal="yes"
# size Journal is allowed to use
vacuumSize="100M"
################################################
if ! [[ "$execute" == "true" ]] ;
then
execute="false"
echo "### RUNNING IN DRY RUN MODE - NOT ISSUING ANY COMMAND!"
else
echo "### CLEANING UP LINUX INSTALLATION"
fi
counter=0
#-------------------------------------------------------------------------------------
# /var/log
if [[ "$cleanVarLog" == "yes" ]] ;
then
myPath="/var/log"
if [[ -d "$myPath" ]] ;
then
echo "Cleaning up >$myPath<"
myPathContent=$null
myPathContent=`sudo find $myPath`
for file in $myPathContent ;
do
delete="false"
postdot=""
postdot=$(echo $file | rev | cut -d. -f1 | rev)
if [[ "$postdot" == "0" ]] ;
then
delete="true"
elif [[ "$postdot" == "1" ]] ;
then
delete="true"
elif [[ "$postdot" == "gz" ]] ;
then
delete="true"
fi
# if a extension is detected to be cleaned up
if [[ "$delete" == "true" ]] ;
then
if [[ "$execute" == "true" ]] ;
then
#echo "delete >$file<"
if ! [[ -d "$file" ]] ;
then
sudo rm -f "$file"
counter=$(($counter+1))
fi
else
echo "DRY: >$file< would be deleted."
fi
fi
done
fi
else
echo "# SKIPPING /var/log cleanup."
fi
#-------------------------------------------------------------------------------------
# reduce journal size
if [[ "$reduceJournal" == "yes" ]] ;
then
if [[ "$execute" == "true" ]] ;
then
sudo journalctl --vacuum-size=$vacuumSize
else
echo "DRY: would execute >sudo journalctl --vacuum-size=$vacuumSize<."
fi
else
echo "# SKIPPING reduction of journal size reduction."
fi
#-------------------------------------------------------------------------------------
# /var/log/journal
if [[ "$cleanVarLogJournal" == "yes" ]] ;
then
myPath="/var/log/journal"
if [[ -d "$myPath" ]] ;
then
echo "Cleaning up >$myPath<"
myPathContent=$null
myPathContent=`sudo find "$myPath" -mtime +3`
for file in $myPathContent ;
do
if ! [[ -d "$file" ]] ;
then
if [[ "$execute" == "true" ]] ;
then
#echo "delete >$file<"
sudo rm -f "$file"
counter=$(($counter+1))
else
echo "DRY: >$file< would be deleted."
fi
fi
done
fi
else
echo "# SKIPPING /var/log/journal cleanup."
fi
#-------------------------------------------------------------------------------------
# /var/log.save
if [[ "$cleanVarLogSave" == "yes" ]] ;
then
myPath="/var/log.save"
if [[ -d "$myPath" ]] ;
then
echo "Cleaning up >$myPath<"
myPathContent=$null
myPathContent=`sudo find $myPath`
for file in $myPathContent ;
do
delete="false"
postdot=""
postdot=$(echo $file | rev | cut -d. -f1 | rev)
if [[ "$postdot" == "0" ]] ;
then
delete="true"
elif [[ "$postdot" == "1" ]] ;
then
delete="true"
elif [[ "$postdot" == "gz" ]] ;
then
delete="true"
fi
if [[ "$delete" == "true" ]] ;
then
if [[ "$execute" == "true" ]] ;
then
#echo "delete >$file<"
sudo rm -f "$file"
counter=$(($counter+1))
else
echo "DRY: >$file< would be deleted."
fi
fi
done
fi
else
echo "# SKIPPING /var/log.save cleanup."
fi
#-------------------------------------------------------------------------------------
# /var/log.save/journal
if [[ "$cleanVarLogJournalSave" == "yes" ]] ;
then
myPath="/var/log.save/journal"
if [[ -d "$myPath" ]] ;
then
echo "Cleaning up >$myPath<"
myPathContent=$null
myPathContent=`sudo find "$myPath" -mtime +3`
for file in $myPathContent ;
do
if [[ "$execute" == "true" ]] ;
then
#echo "delete >$file<"
sudo rm -f "$file"
counter=$(($counter+1))
else
echo "DRY: >$file< would be deleted."
fi
done
fi
else
echo "# SKIPPING /var/log.save/journal cleanup."
fi
#-------------------------------------------------------------------------------------
# /var/cache/e2fsck
if [[ "$cleanVarCacheE2fsck" == "yes" ]] ;
then
myPath="/var/cache/e2fsck"
if [[ -d "$myPath" ]] ;
then
echo "Cleaning up >$myPath<"
myPathContent=$null
myPathContent=`sudo find "$myPath" -mtime +3`
for file in $myPathContent ;
do
if [[ "$execute" == "true" ]] ;
then
#echo "delete >$file<"
sudo rm -f "$file"
counter=$(($counter+1))
else
echo "DRY: >$file< would be deleted."
fi
done
fi
else
echo "# SKIPPING /var/cache/e2fsck cleanup."
fi
#-------------------------------------------------------------------------------------
# /var/lib/clamav
if [[ "$cleanVarLibClamav" == "yes" ]] ;
then
myPath="/var/lib/clamav"
if [[ -d "$myPath" ]] ;
then
echo "Cleaning up >$myPath<"
myPathContent=$null
myPathContent=`sudo find "$myPath" -mtime +3`
for file in $myPathContent ;
do
if [[ "$execute" == "true" ]] ;
then
#echo "delete >$file<"
sudo rm -f "$file"
counter=$(($counter+1))
else
echo "DRY: >$file< would be deleted."
fi
done
fi
else
echo "# SKIPPING /var/lib/clamav cleanup."
fi
#-------------------------------------------------------------------------------------
# /lib/modules AND /boot
if [[ "$cleanOldKernels" == "yes" ]] ;
then
kernelVersion=`uname -r`
myPath="/lib/modules"
echo "Cleaning up >$myPath<"
myPathContent=$null
myPathContent=`ls -1 "$myPath"`
for item in $myPathContent ;
do
if ! [[ "$item" == "$kernelVersion" ]] ;
then
if [[ "$execute" == "true" ]] ;
then
#echo "delete >$myPath/$item<"
sudo rm -rf "$myPath/$item"
counter=$(($counter+1))
else
echo "DRY: >$myPath/$item< would be deleted."
fi
#boot files
correspondingBootFiles=`sudo find /boot | grep $item`
for bootItem in $correspondingBootFiles ;
do
if [[ "$execute" == "true" ]] ;
then
#echo "delete >$bootItem<"
sudo rm -f "$bootItem"
counter=$(($counter+1))
else
echo "DRY: >$bootItem< would be deleted."
fi
done
else
echo "detected running kernel >$kernelVersion<."
break
fi
done
# update grub after cleanup
if [[ "$execute" == "true" ]] ;
then
echo "Updating grub"
sudo update-grub
else
echo "DRY: would execute >sudo update grub<"
fi
else
echo "# SKIPPING cleanup of old kernel and /lib/modules."
fi
#-------------------------------------------------------------------------------------
# Cleaning old configuration files of packages been removed
if [[ "$cleanRemovedConfigFiles" == "yes" ]] ;
then
echo "Cleaning up configuration files from removed packages"
if [[ "$execute" == "true" ]] ;
then
sudo dpkg -l | awk '/^rc/{print $2}' | sudo xargs apt-get purge -y
else
echo "DRY: would execute >sudo dpkg -l | awk '/^rc/{print $2}' | sudo xargs apt-get purge -y<."
echo "DRY: list of packages is"
sudo dpkg -l | awk '/^rc/{print $2}'
fi
else
echo "# SKIPPING cleanup of old config files of removed packages"
fi
#-------------------------------------------------------------------------------------
# Cleanup apt cache
if [[ "$cleanApt" == "yes" ]] ;
then
echo "Cleaning up apt-cache via apt-get"
if [[ "$execute" == "true" ]] ;
then
sudo apt-get clean -y
sudo apt-get autoremove -y
# update grub after cleanup
echo "Updating grub"
sudo update-grub
else
echo "DRY: would execute >sudo apt-get clean -y<"
echo "DRY: would execute >sudo apt-get autoremove -y<"
echo "DRY: would execute >sudo update-grub<"
fi
else
echo "# SKIPPING cleanup via apt-get"
fi
#-------------------------------------------------------------------------------------
# /etc/apt/cache
if [[ "$cleanApt" == "yes" ]] ;
then
myPath="/etc/apt/cache"
echo "Cleaning up >$myPath<"
if [[ -d "$myPath" ]] ;
then
myPathContent=$null
myPathContent=`sudo find "$myPath/*" -mtime +3`
for item in $myPathContent ;
do
if [[ "$execute" == "true" ]] ;
then
#echo "delete >$item<"
sudo rm -f "$item"
counter=$(($counter+1))
else
echo "DRY: >$item< would be deleted."
fi
done
fi
else
echo "# SKIPPING /etc/apt/cache cleanup."
fi
#-------------------------------------------------------------------------------------
# Closing down
if [[ "$execute" == "true" ]] ;
then
echo "Cleaned up >$counter< elements."
else
echo "DRY: system was not modified"
fi
echo " Current state:"
sudo df -h /