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#!/usr/bin/env bash
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# Unofficial Bash Strict Mode
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set -euo pipefail
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IFS='
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'
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export DEBIAN_FRONTEND=noninteractive
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# Fix Debian 10 bug (https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=905409)
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PATH=/sbin:/usr/sbin:$PATH
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# Debian stable OS
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apt-get update
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apt-get -y upgrade
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apt-get -y dist-upgrade
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# Disable OpenStack SSH malware
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mv /home/debian/.ssh/authorized_keys /root/.ssh/authorized_keys ||:
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sed -i '/Generated-by-Nova/d' /root/.ssh/authorized_keys ||:
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chown root:root /root/.ssh/authorized_keys ||:
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# Terminal goodies
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touch .hushlogin
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cat <<'EOF'>> /root/.bashrc
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export LS_OPTIONS="--color=auto"
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eval "`dircolors`"
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alias ctop="docker run --rm -it --name=ctop -v /var/run/docker.sock:/var/run/docker.sock:ro quay.io/vektorlab/ctop"
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alias df="df --si"
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alias du="du -cs --si"
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alias free="free -h --si"
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alias l="ls $LS_OPTIONS -al --si --group-directories-first"
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alias less="less -i"
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alias nano="nano -clDOST4"
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alias pstree="pstree -palU"
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export HISTCONTROL=ignoreboth
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export HISTFILESIZE=
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export HISTSIZE=
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export HISTTIMEFORMAT="%F %T "
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EOF
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cat <<'EOF'>> /etc/inputrc
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set completion-ignore-case
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set show-all-if-ambiguous On
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set show-all-if-unmodified On
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EOF
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cat <<'EOF'>> /etc/bash.bashrc
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if ! shopt -oq posix; then
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if [ -f /usr/share/bash-completion/bash_completion ]; then
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. /usr/share/bash-completion/bash_completion
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elif [ -f /etc/bash_completion ]; then
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. /etc/bash_completion
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fi
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fi
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EOF
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# Basic packages
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apt-get -y install man bash-completion git ufw jq curl build-essential netcat wget psmisc lz4 file net-tools brotli unzip zip moreutils xauth sysfsutils rsync iperf pv tree mc screen ssh iotop whois sudo
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# Enable time synchronization
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timedatectl set-ntp true
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# Configure screen
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cat <<'EOF'>> /etc/screenrc
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startup_message off
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shell -$SHELL
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defscrollback 100000
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bind l eval clear "scrollback 0" "scrollback 100000"
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EOF
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# Configure SSH
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cat <<'EOF'>> /etc/ssh/sshd_config
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Port 521
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PasswordAuthentication no
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AllowUsers root
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X11UseLocalhost no
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EOF
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systemctl restart ssh
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touch /root/.Xauthority
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# Firewall
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ufw allow in 80/tcp
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ufw allow in 443/tcp
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ufw allow in 521/tcp
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ufw logging off
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ufw --force enable
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ufw --force delete 4
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ufw --force delete 4
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ufw --force delete 4
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# Optimize
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systemctl disable unattended-upgrades.service apt-daily.timer apt-daily-upgrade.timer console-setup.service keyboard-setup.service remote-fs.target man-db.timer systemd-timesyncd.service
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sed -i 's/MODULES=most/MODULES=dep/g' /etc/initramfs-tools/initramfs.conf
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sed -i 's/COMPRESS=gzip/COMPRESS=lz4/g' /etc/initramfs-tools/initramfs.conf
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echo 'RESUME=none' >> /etc/initramfs-tools/conf.d/resume
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update-initramfs -u
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echo 'GRUB_TIMEOUT=0' >> /etc/default/grub
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update-grub
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apt-get -y purge apparmor exim\*
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for i in $(seq 0 "$(nproc --ignore 1)"); do
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echo "devices/system/cpu/cpu${i}/cpufreq/scaling_governor = performance" >> /etc/sysfs.conf
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done
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# Disable sleep when closing laptop screen
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echo HandleLidSwitch=ignore >> /etc/systemd/logind.conf
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# noatime
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sed -i 's| / ext4 | / ext4 noatime,|g' /etc/fstab
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# Disable swap
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swapoff -a
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sed -i '/swap/d' /etc/fstab
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# Docker
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apt-get -y install apt-transport-https ca-certificates curl gnupg2 software-properties-common
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curl -fsSL https://download.docker.com/linux/debian/gpg | apt-key add -
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add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/debian $(lsb_release -cs) stable"
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apt-get update
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apt-get -y install docker-ce docker-ce-cli containerd.io
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# Docker compose
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curl -L "https://github.com/docker/compose/releases/download/1.27.4/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose
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chmod +x /usr/local/bin/docker-compose
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curl -L https://raw.githubusercontent.com/docker/compose/1.27.4/contrib/completion/bash/docker-compose -o /etc/bash_completion.d/docker-compose
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# Generate SSH key
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ssh-keygen -ted25519 -f ~/.ssh/id_ed25519 -N ''
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# Cleanup
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sed -i '/^deb-src/d' /etc/apt/sources.list
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apt-get update
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apt-get -y purge unattended-upgrades
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apt-get -y autoremove --purge
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apt-get clean
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# The end
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reboot
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