cleanup_gentoo.sh

#!/usr/bin/env sh
# Written by: 	Daulton
# Website: 		https://daulton.ca
# Repository:	https://github.com/jeekkd
#
# Purpose: To be a simple script to run after uninstalling packages to clean the dependencies or wanting to 
# clean portages left over ebuilds from previous emerges. There is a couple extra handy things like emptying 
# the trash, cleaning /var/tmp and /tmp, checks the system for compliance with Gentoo Linux Security 
# Advisories and so forth.

user=$(who am i | awk '{print $1}')

echo "* Cleaning /var/tmp, /tmp, etc..."
rm -rf /var/tmp/portage/*
rm -rf /var/tmp/ccache/*
rm -rf /var/tmp/binpkgs/*
rm -rf /var/tmp/genkernel/*
rm -rf /tmp/*
rm -rf /var/cache/genkernel/*
echo

echo "* Clean contents of /usr/portage/distfiles? Y/N"
echo "Source code archives and distribution files for older versions of programs are not automatically removed when a new version is emerged. "
read -r cleanDistfiles
if [ "$cleanDistfiles" = "Y" ] || [ "$cleanDistfiles" = "y" ]; then
	rm -rf /usr/portage/distfiles/*
fi

echo
echo "* Remove contents of /usr/portage/packages? Y/N"
echo "As with distribution files, binary packages are not automatically removed. "
read -r cleanPackages
if [ "$cleanPackages" = "Y" ] || [ "$cleanPackages" = "y" ]; then
	rm -rf /usr/portage/packages/*
fi

echo
echo "Enter kernel module cleaning menu? Y/N"
echo "Module files installed after kernel compilation are not tracked by the package manager an thus are not deleted after being unmerged. "
read -r cleanModules
if [ "$cleanModules" = "Y" ] || [ "$cleanModules" = "y" ]; then
	echo "Select each entry by the its number to delete it then when done type exit to exit"
	echo
	for (( ; ; )); do
		ls -l /lib64/modules/ | sed 1d | cat -n
		deleteConfirmation=
		read -r moduleSelection
		if [ "$moduleSelection" = "exit" ] || [ "$moduleSelection" = "Exit" ]; then
			echo "Exiting now"
			break
		fi
		moduleToDelete=$(ls /lib64/modules/ | sed -n $moduleSelection\p)
		echo
		echo "Are you sure you want to delete the modules for $moduleToDelete? Y/N or exit"
		read -r deleteConfirmation
		if [ "$deleteConfirmation" = "Y" ] || [ "$deleteConfirmation" = "y" ]; then
			echo "* Deleting modules.. please wait"
			rm -rf /lib64/modules/"$moduleToDelete"/
			if [ $? -eq 0 ]; then
				echo "Deletion complete.."
				echo
				echo "Select each entry to delete then when done type exit at any time to exit"
				echo
			fi
		elif [ "$deleteConfirmation" = "N" ] || [ "$deleteConfirmation" = "n" ]; then
			echo "Returning back.."
		elif [ "$deleteConfirmation" = "exit" ] || [ "$deleteConfirmation" = "Exit" ]; then
			echo "Exiting now"
			break
		else
			echo "Exiting now"
			break
		fi
	done
fi

echo
echo "Enter kernel sources cleaning menu? Y/N"
echo "As with module files, kernel object files are not removed by the package manager. "
read -r cleanKernels
if [ "$cleanKernels" = "Y" ] || [ "$cleanKernels" = "y" ]; then
	echo "Select each entry to delete then when done type exit at any time to exit"
	echo
	for (( ; ; )); do
		ls -l --hide=linux /usr/src/ | sed 1d | cat -n
		deleteConfirmation=
		read -r kernelSelection
		if [ $kernelSelection = "exit" ] || [ $kernelSelection = "Exit" ]; then
			echo "Exiting now"
			break
		fi
		kernelToDelete=$(ls -l --hide=linux /usr/src/ | sed 1d | awk '/linux/{print $9}' | sed -n $kernelSelection\p)
		echo
		echo "Are you sure you want to delete the kernel $kernelToDelete? Y/N or exit"
		read -r deleteConfirmation
		if [ "$deleteConfirmation" = "Y" ] || [ "$deleteConfirmation" = "y" ]; then
			rm -rf /usr/src/"$kernelToDelete"/
			if [ $? -eq 0 ]; then
				echo "Deletion complete.."
				echo
				echo "Select each entry to delete then when done type exit at any time to exit"
				echo
			fi
		elif [ "$deleteConfirmation" = "N" ] || [ "$deleteConfirmation" = "n" ]; then
			echo "Returning back.."
		elif [ "$deleteConfirmation" = "exit" ] || [ "$deleteConfirmation" = "Exit" ]; then
			echo "Exiting now"
			break
		else
			echo "Exiting now"
			break
		fi
	done
fi

echo
echo "Enter /boot kernel cleaning menu? Y/N"
echo "Removing old kernels that have accumulated can save space."
read -r cleanBootKernels
if [ "$cleanBootKernels" = "Y" ] || [ "$cleanBootKernels" = "y" ]; then
	echo "Select each entry to delete then when done type exit at any time to exit"
	echo
	for (( ; ; )); do
		ls -l --hide=config* --hide=initramfs* --hide=System.map* --hide=.keep --hide=grub* /boot | sed 1d | cat -n
		deleteConfirmation=
		read -r bootKernelSelection
		if [ $bootKernelSelection = "exit" ] || [ $bootKernelSelection = "Exit" ]; then
			echo "Exiting now"
			break
		fi
		kernelToDelete=$(ls -l --hide=config* --hide=initramfs* --hide=System.map* --hide=.keep --hide=grub* /boot | awk '{print $9}' | sed 1d | sed -n $bootKernelSelection\p)
		echo
		echo "Are you sure you want to delete the kernel $kernelToDelete? Y/N or exit"
		read -r deleteConfirmation
		if [ "$deleteConfirmation" = "Y" ] || [ "$deleteConfirmation" = "y" ]; then
			rm /boot/$kernelToDelete
			if [ $? -eq 0 ]; then
				echo "Deletion complete.."
				echo
				echo "Select each entry to delete then when done type exit at any time to exit"
				echo
			fi
		elif [ "$deleteConfirmation" = "N" ] || [ "$deleteConfirmation" = "n" ]; then
			echo "Returning back.."
		elif [ "$deleteConfirmation" = "exit" ] || [ "$deleteConfirmation" = "Exit" ]; then
			echo "Exiting now"
			break
		else
			echo "Exiting now"
			break
		fi
	done
	echo
	echo "Note that only kernels are deleted, associated initramfs, System.map, config will need to be manually deleted."
fi

echo
echo "Clean firefox and chromium browser caches? Y/N"
read -r browserClean
if [ "$browserClean" = "Y" ] || [ "$browserClean" = "y" ]; then
	echo "* Cleaning browser and other caches..."
	rm -rf  /home/$user/.cache/chromium/Default/*
	rm /home/$user/.mozilla/firefox/*.default/*.sqlite /home/$user/.mozilla/firefox/*default/sessionstore.js
	rm -rf /home/$user/.cache/mozilla/firefox/*.default/*
	echo
fi

echo "* Cleaning unused libraries and programs..."
emerge -av --depclean
emerge -cav
echo

echo "* Cleaning out the trash..."
rm -rf /home/*/.local/share/Trash/*/** &> /dev/null
rm -rf /root/.local/share/Trash/*/** &> /dev/null
echo

echo "* Checking system for compliance with Gentoo Linux Security Advisories"
good_result="This system is not affected by any of the listed GLSAs"
glsa_check_result=$(glsa-check -t all)
if [ "$(diff -q $glsa_check_result $good_result 2>&1)" = "" ]; then
    glsa-check -f all
fi
echo

echo "* Removing locale files"
find /usr/share/locale/* -type d | xargs rm -rf
echo

echo "* Removing unused packages"
eclean -d packages
echo

echo "* Checking for packages with changed use flags"
emerge --ask --update --changed-use --deep @world
echo

echo "* Disabling python bytecode generation"
echo "PYTHONDONTWRITEBYTECODE=1" > /etc/env.d/99python
env-update && source /etc/profile

isInstalledRotate=$(equery list "*" | grep logrotate)
if [ "$isInstalledRotate" = *[!\ ]* ]; then
	echo "* Running a forced logrotate and cleaning logs"
	logrotate --force /etc/logrotate.conf
	find /var/log/ -name '*[0-5]*' -exec rm {} \;
else
	echo "* Would you like to install logrotate to keep your logs clean? YES/NO"
	read -r logrotate_answer
	if [ "$logrotate_answer" = "YES" ] || [ "$logrotate_answer" = "yes" ]; then
		emerge app-admin/logrotate
	fi
fi

echo
echo "* Checking for obselete packages..."
eix-test-obsolete

echo
echo "* Finishing up with checking for and rebuild missing libraries..."
revdep-rebuild -v

echo
echo "* Complete!"