# apt update
# apt upgrade
# apt dist-upgrade

# do-release-upgrade

# apt install update-manager-core

# update-alternatives --install /usr/bin/python python /usr/bin/python3 1

# update-alternatives --config editor

# timedatectl set-timezone Asia/Tokyo

# ln -sf /usr/share/zoneinfo/Asia/Tokyo /etc/localtime

# losetup -f --show -P sdcard.img

# losetup -d /dev/loopN

# udevadm info -a -p /sys/class/net/eth0

# ethtool -i eth0

# ethtool -k eth0

# ethtool --show-priv-flags eth0

# ethtool -m eth0

# ethtool -e eth0 raw on | hexdump -C

# add-apt-repository ppa:apt-fast/stable
# apt update
# apt install apt-fast

# apt install software-properties-common