Automation of Ubuntu droplet setup

droplet-setup.sh

# Run using the following command:
# curl -L https://gist.github.com/emilh91/9542a179beace3e2f68698da75888a97/raw | bash ; source ~/.bashrc

##### install utils
sudo apt-get update
sudo apt-get install -y git vim curl tmux lsof build-essential python3-pip unzip nginx

##### allocate swap file
sudo fallocate -l 1G /swapfile
sudo chmod 600 /swapfile
sudo mkswap /swapfile
sudo swapon /swapfile
sudo cp /etc/fstab /etc/fstab.bak
echo "/swapfile none swap sw 0 0" | sudo tee -a /etc/fstab

##### .bashrc config
sed -i "s/^#\(force_color_prompt=yes\)/\1/" ~/.bashrc
echo "" >> ~/.bashrc
echo "export EDITOR=vim" >> ~/.bashrc
echo "export TIME_STYLE=long-iso" >> ~/.bashrc
echo "" >> ~/.bashrc
echo "# to prevent nested tmux sessions" >> ~/.bashrc
echo "if [ \"\$SHLVL\" = \"2\" ]; then" >> ~/.bashrc
echo "    tmux a -t 0" >> ~/.bashrc
echo "fi" >> ~/.bashrc

##### some aliases
echo "alias cls=\"clear && printf '\033[3J'\"" >> ~/.bash_aliases
echo "alias env=\"/usr/bin/env | sort\"" >> ~/.bash_aliases
echo "alias sp=\"source ~/.bashrc\"" >> ~/.bash_aliases
echo "alias ep=\"vim ~/.bashrc\"" >> ~/.bash_aliases
echo "alias glog=\"git log --color=always --pretty=format:'%Cred%h%Creset -%C(yellow)%d%Creset %s %Cgreen(%cr) %C(bold blue)<%an>%Creset' --abbrev-commit | less -r\"" >> ~/.bash_aliases
echo "alias gp=\"git pull --autostash --rebase\"" >> ~/.bash_aliases
echo "alias gfp=\"git fetch --all --prune\"" >> ~/.bash_aliases

##### vim config
echo "highlight SignColumn ctermbg=white" >> ~/.vimrc
echo "highlight LineNr ctermbg=darkgrey ctermfg=white" >> ~/.vimrc
echo "" >> ~/.vimrc
echo "set mouse=a" >> ~/.vimrc
echo "set number" >> ~/.vimrc
echo "set cursorline" >> ~/.vimrc
echo "set showmatch" >> ~/.vimrc
echo "set shiftwidth=4" >> ~/.vimrc
echo "set tabstop=4" >> ~/.vimrc
echo "set incsearch" >> ~/.vimrc
echo "set hlsearch" >> ~/.vimrc
echo "set expandtab" >> ~/.vimrc
echo "syntax enable" >> ~/.vimrc

##### tmux config
git clone https://github.com/tmux-plugins/tpm ~/.tmux/plugins/tpm
echo "# Set the prefix from \`C-b\` to \`C-a\`" >> ~/.tmux.conf
echo "set -g prefix C-a" >> ~/.tmux.conf
echo "" >> ~/.tmux.conf
echo "# Free the original \`Ctrl-b\` prefix keybinding" >> ~/.tmux.conf
echo "unbind C-b" >> ~/.tmux.conf
echo "" >> ~/.tmux.conf
echo "# Ensure that we can send \`Ctrl-a\` to other apps" >> ~/.tmux.conf
echo "bind C-a send-prefix" >> ~/.tmux.conf
echo "" >> ~/.tmux.conf
echo "# Bind prefix-r to reload the file" >> ~/.tmux.conf
echo "bind r source-file ~/.tmux.conf \; display \"Reloaded tmux configuration!\"" >> ~/.tmux.conf
echo "" >> ~/.tmux.conf
echo "# Use F11 and F12 to switch between windows" >> ~/.tmux.conf
echo "bind-key -n F11 previous-window" >> ~/.tmux.conf
echo "bind-key -n F12 next-window" >> ~/.tmux.conf
echo "" >> ~/.tmux.conf
echo "# Highlight current window border using specified color" >> ~/.tmux.conf
echo "set -g pane-active-border-fg red" >> ~/.tmux.conf
echo "" >> ~/.tmux.conf
echo "# Highlight current window using specified color" >> ~/.tmux.conf
echo "setw -g window-status-current-bg red" >> ~/.tmux.conf
echo "" >> ~/.tmux.conf
echo "#set -g history-limit 3000" >> ~/.tmux.conf
echo "" >> ~/.tmux.conf
echo "# Bind Alt+arrow keys to switch panes" >> ~/.tmux.conf
echo "bind -n M-Left select-pane -L" >> ~/.tmux.conf
echo "bind -n M-Right select-pane -R" >> ~/.tmux.conf
echo "bind -n M-Up select-pane -U" >> ~/.tmux.conf
echo "bind -n M-Down select-pane -D" >> ~/.tmux.conf
echo "" >> ~/.tmux.conf
echo "# Mouse support" >> ~/.tmux.conf
echo "set -g mouse on" >> ~/.tmux.conf
#echo "set -g mode-mouse on" >> ~/.tmux.conf
#echo "set -g mouse-select-pane on" >> ~/.tmux.conf
#echo "set -g mouse-resize-pane on" >> ~/.tmux.conf
#echo "set -g mouse-select-window on" >> ~/.tmux.conf

##### timezone config (default is UTC)
sudo rm /etc/localtime
sudo ln -s /usr/share/zoneinfo/US/Eastern /etc/localtime
sudo service cron restart

##### install nvm (Node Version Manager)
curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.39.7/install.sh | bash
nvm install --lts # or just "nvm install node" ?

##### nginx config
mkdir -p /etc/nginx/ssl

##### ssh key
ssh-keygen -t ed25519 -C "[email protected]"

##### git config
git config --global user.name "Emil Huseynaliev"
git config --global user.email "[email protected]"
git config --global push.default current
git config --global core.excludesfile ~/.gitignore_global
git config --global gpg.format ssh
git config --global user.signingkey ~/.ssh/id_ed25519.pub