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System settings
Set timezone
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| # dpkg-reconfigure tzdata
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Set time
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| # date --set "25 Sep 2013 15:00:00"
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Set hostname
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| # hostname <hostname>
# nano /etc/hosts
# nano /etc/hostname
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Use local mirror
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| # nano /etc/apt/source.list
# apt update
# apt upgrade
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Create admin
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| # useradd -m -s `which bash` <user>
# usermod -aG sudo <user>
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NOPASSWD:ALL
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| # visudo
// Add at end of the file
<user> ALL=(ALL) NOPASSWD:ALL
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SSH public key login
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| mkdir .ssh
nano .ssh/authorized_keys
chmod 600 .ssh/authorized_keys
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SSH port change / disable root login
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| nano /etc/ssh/sshd_config
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Create working env
byobu
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| sudo apt install byobu
byobu-enable
nano .byobu/status
nano .byobu/statusrc
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zsh & oh-my-zsh
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sudo apt install zsh
sudo usermod -s `which zsh` <user>
sudo apt install git
sh -c "$(curl -fsSL https://raw.github.com/ohmyzsh/ohmyzsh/master/tools/install.sh)"
nano .zshrc
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Re-partition
fdisk
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| sudo fdisk /dev/vda
d d n a w q
sudo resize2fs /dev/vda1
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soft swap
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| sudo swapoff -a
sudo fallocate -l 1G /swapfile
sudo chmod 600 /swapfile
sudo mkswap /swapfile
sudo swapon /swapfile
nano /etc/fstab
/swapfile swap swap defaults 0 0
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dist upgrade
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| sudo apt install ubuntu-release-upgrader-core
sudo do-release-upgrade -d
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BBR
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| nano /etc/sysctl.conf
net.core.default_qdisc=fq
net.ipv4.tcp_congestion_control=bbr
sudo sysctl -p
sudo sysctl net.ipv4.tcp_available_congestion_control
sudo sysctl net.ipv4.tcp_congestion_control
lsmod | grep bbr
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Unattended upgrade
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| sudo apt install unattended-upgrades
sudo dpkg-reconfigure -plow unattended-upgrades
sudo nano /etc/apt/apt.conf.d/50unattended-upgrades
sudo unattended-upgrades
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