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# dpkg-reconfigure tzdata
# date --set "25 Sep 2013 15:00:00"
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# hostname <hostname># nano /etc/hosts# nano /etc/hostname
# nano /etc/apt/source.list# apt update# apt upgrade
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# useradd -m -s `which bash` <user># usermod -aG sudo <user>
# visudo// Add at end of the file<user> ALL=(ALL) NOPASSWD:ALL
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# su alice$ sudo ls
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mkdir .sshnano .ssh/authorized_keyschmod 600 .ssh/authorized_keys
nano /etc/ssh/sshd_config
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sudo apt install byobubyobu-enablenano .byobu/statusnano .byobu/statusrc
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sudo apt install zshsudo usermod -s `which zsh` <user>sudo apt install gitsh -c "$(curl -fsSL https://raw.github.com/ohmyzsh/ohmyzsh/master/tools/install.sh)"nano .zshrc
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sudo fdisk /dev/vdad d n a w qsudo resize2fs /dev/vda1
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sudo swapoff -asudo fallocate -l 1G /swapfilesudo chmod 600 /swapfilesudo mkswap /swapfilesudo swapon /swapfilenano /etc/fstab# add entry/swapfile swap swap defaults 0 0
sudo apt install ubuntu-release-upgrader-coresudo do-release-upgrade -d
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nano /etc/sysctl.conf# add the linesnet.core.default_qdisc=fqnet.ipv4.tcp_congestion_control=bbrsudo sysctl -psudo sysctl net.ipv4.tcp_available_congestion_controlsudo sysctl net.ipv4.tcp_congestion_controllsmod | grep bbr
sudo apt install unattended-upgradessudo dpkg-reconfigure -plow unattended-upgradessudo nano /etc/apt/apt.conf.d/50unattended-upgradessudo unattended-upgrades