Linux remove old kernels für update to UBUNTU 22.0

 in case you need more space at /boot while updating to UBUNTU 22

dpkg -l 'linux-*' | sed '/^ii/!d;/'"$(uname -r | sed "\(.*\)-\([^0-9]\+\)/\1/")"'/d;s/^[^ ]* [^ ]* \([^ ]*\).*/\1/;/[0-9]/!d' | xargs sudo apt-get -y purge