On 17/08/2022 13:00, dorset-requ...@mailman.lug.org.uk wrote:
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Today's Topics:
1. Cleaning system (Peter Merchant)
----------------------------------------------------------------------
Message: 1
Date: Tue, 16 Aug 2022 21:12:52 +0100
From: Peter Merchant <petermerch...@hotmail.com>
To: DLug <dorset@mailman.lug.org.uk>
Subject: [Dorset] Cleaning system
Message-ID:
<as8p191mb15906712d55a5942df52d42eb3...@as8p191mb1590.eurp191.prod.outlook.com>
Content-Type: text/plain; charset=UTF-8; format=flowed
I have been thinking that my system is slow recently, and especially with some
programs such as the Arduino IDE which takes well over a minute to load. I
wondered if I had two many old versions of the kernel or something so I ran
sudo dpkg --list | egrep 'linux-image|linux-headers'
Which did show me many old ones.
According to one reference
sudo apt autoremove --purge????? should have cleaned up the system, but it
didn't seem to do anything, so I have been working through each one seperately
sudo apt purge linux-image-5.4.0-99-generic? ....
even so they leave a lot of files around so I have been going into
root/usr/lib/modules/5.4.0-99-generic and all the others trying to remove them.
Is there an easy way to do this?
I have looked at bleachbit but it doesn't seem to help.
thee is probably a fairly simple script to do it, but I am not a script
programmer.
Thanks for any help.
Peter
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End of dorset Digest, Vol 917, Issue 1
**************************************
Peter, I attach a script that I use to remove all but the latest 3
(default) kernels from my Mageia installations. I hope it is of use for you.
Graeme
#!/bin/bash
# Set number of packages to keep. Must be 1 or greater
declare -i NumberOfVersionsToKeep=3
set -u
ListInstalledPackages() {
LatestPrefixStart="${LatestPrefix%%-*}"
if [ "virtualbox" == "${LatestPrefixStart}" ] ; then
PackagePrefix="virtualbox-kernel"
elif [ "vboxadditions" == "${LatestPrefixStart}" ] ; then
PackagePrefix="vboxadditions-kernel"
elif [ "xtables" == "${LatestPrefixStart}" ] ; then
PackagePrefix="xtables-addons-kernel"
else
PackagePrefix="$LatestPrefix"
fi
RpmOutputLines=($(rpm -qa $PackagePrefix-\[0-9\]*|sort -V))
PackageCount=${#RpmOutputLines[@]}
if (( $PackageCount > $NumberOfVersionsToKeep )) ; then
LinesKeep=$(( $PackageCount - $NumberOfVersionsToKeep ))
RemoveListNew=("$(printf "%s\n" "${RpmOutputLines[@]}"|head -n
$LinesKeep)")
RemoveList=(${RemoveList[@]-} ${RemoveListNew[@]})
fi
}
ProcessLatest() {
x="${LatestPackage%-*}" # strip last hyphen and following (removes rpm
Release)
x="${x%-*}" # strip last hyphen and following (removes rpm Version')
LatestPrefix="${x%-*}" # strip last hyphen and following (removes '-latest')
ListInstalledPackages
}
RemoveList=( )
LatestPackagesList=($(rpm -qa *latest |grep -v perl-latest|sort))
for LatestPackage in "${LatestPackagesList[@]}"; do
ProcessLatest
done
if (( ${#RemoveList[@]} > 0 )) ; then
urpme --wait-lock ${RemoveList[@]}
fi
exit
--
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