The this script gets the latest updates via dnf log files and reversed the system back to a given date in time, that is still in the logfile.
Presenting the Rawhide Downgrade to past date script
It’s far from perfect, but tries it’s best. You need to install koji package first: „dnf install koji“
Most likely outcome: some packages will be missing, because koji can’t find them and some will be double present, with different versions and you end up in a collision. Remove the higher version files manually and do „dnf downgrade ./*rpm“
Usage: scriptname {timestamp}
#!/bin/bash
grep "Upgraded:" /var/log/dnf.rpm.log | sort -r > /tmp/liste
mkdir rpmdownload
cd rpmdownload
if [ "" == "$1" ]; then
echo "Keine Zeit angegeben.. benutze 4.2.2021"
since=$(date --date="2021-02-04T00:00:00+0100" "+%s")
else
since=$(date --date="$1" "+%s")
fi
packs=""
declare -A old = ()
IFS=$'\n'
for line in $(cat /tmp/liste)
do
date=$(echo $line|sed -e "s/ .*//g")
pkg=$(echo $line|sed -e "s/^.*: //g")
time=$(date --date="$date" "+%s")
if [ $time -gt $since ]; then
echo "$date => OK => $pkg"
koji download-build --rpm $pkg
basename=$(rpm -q --queryformat="%{Name}" ./$pgk)
if [ "${old[$basename]}" != "" ]; then
echo "found old entry ${old[$basename]}";
rm -f ${old[$basename]}
fi
$old[$basename]="$pkg"
packs="$packs $pkg"
else
echo "$date => IGNORE => $pkg"
fi
done
if [ "$packs" != "" ]; then
dnf -y downgrade ./*rpm
fi
When is it usefull?
If something, you don’t know of, broke the system by Updates and you need to undo tons of downgrades. Happend to pinephones on the 8th of February 2021.