Linux/apt

List installed packages

dpkg --get-selections | grep -v deinstall

aptitude search '~i!~M'

apt-mark showmanual                               # only names of manually installes packages

unattended upgrades

apt install unattended-upgrades
dpkg-reconfigure --priority=low unattended-upgrades

• /etc/apt/apt.conf.d/50unattended-upgrades

# Ubuntu
Unattended-Upgrade::Allowed-Origins {
    "Docker:${distro_codename}";
}
or
# Debian
Unattended-Upgrade::Origins-Pattern {
    "origin=Docker,label=Docker CE";
    "origin=Proxmox,label=Proxmox Debian Repository";
}

• /etc/apt/apt.conf.d/

• manually run/test unattended upgrades

sudo unattended-upgrade -d

Find package for file

dpkg -S /bin/ls

compare mirrors

http://mirrors.ubuntu.com/DE.txt

curl -s http://mirrors.ubuntu.com/DE.txt | xargs -n1 -I {} sh -c 'echo `curl -r 0-1024000 -s -w %{speed_download} -o /dev/null {}/ls-lR.gz` {}' |sort -gr

apt cacher with docker

• docker-compose.yml

version: '3'

services:
  aptcacher:
    image: sameersbn/apt-cacher-ng
    restart: always
    container_name: aptcacher
    ports:
      - "3142:3142"
    volumes:
      - /srv/docker-data/aptcacher:/var/cache/apt-cacher-ng

• add proxxy to apt

touch /etc/apt/apt.conf.d/00aptproxy
echo 'Acquire::http::Proxy "http://192.168.111.11:3142";' > /etc/apt/apt.conf.d/00aptproxy