用于在 Ubuntu 上初始化开发环境，包含了zip, git, java, nodejs, sdkman, pm2, docker, docker-compose 这些常用的工具，以及初始化 ssh key Ed25519

setup.sh

i#!/bin/bash

# 更新系统软件包列表
sudo apt update

# 安装必需的软件包
for pkg in curl wget git vim; do
  if ! command -v $pkg &> /dev/null; then
    echo "Installing $pkg..."
    sudo apt install -y $pkg
  else
    echo "$pkg is already installed."
  fi
done

# 安装 zip 和 unzip
if ! command -v zip &> /dev/null; then
    echo "Installing zip..."
    sudo apt install -y zip
else
    echo "zip is already installed."
fi

if ! command -v unzip &> /dev/null; then
    echo "Installing unzip..."
    sudo apt install -y unzip
else
    echo "unzip is already installed."
fi

# 安装 Docker
if ! command -v docker &> /dev/null; then
  echo "Installing Docker..."
  sudo apt install -y apt-transport-https ca-certificates software-properties-common
  curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
  sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable"
  sudo apt update
  sudo apt install -y docker-ce docker-ce-cli containerd.io
  # 添加当前用户到docker组，以避免使用docker时权限问题
  if ! groups $USER | grep -q "\bdocker\b"; then
    sudo usermod -aG docker $USER
    echo "User $USER added to docker group. Please log out and log back in to apply the changes."
  else
    echo "User $USER is already a member of the docker group."
  fi
else
  echo "Docker is already installed."
fi


# 安装 Docker Compose
if ! command -v docker-compose &> /dev/null; then
  echo "Installing Docker Compose..."
  sudo curl -L "https://github.com/docker/compose/releases/download/1.29.2/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose
  sudo chmod +x /usr/local/bin/docker-compose
else
  echo "Docker Compose is already installed."
fi

# 安装或更新 sdkman
if ! command -v sdk &> /dev/null; then
  echo "Installing sdkman..."
  curl -s "https://get.sdkman.io" | bash
  source "$HOME/.sdkman/bin/sdkman-init.sh"
else
  echo "sdkman is already installed."
fi

# 安装 Java version 21（如果可用）
if sdk list java | grep -q " 21.0."; then
  echo "Java 21 is already installed."
else
  echo "Installing Java 21..."
  sdk install java 21.0.2-amzn
fi

# 安装 Node.js version 21（如果可用）和 pm2
if ! command -v nvm &> /dev/null; then
  echo "Installing nvm..."
  curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.39.0/install.sh | bash
fi
source "$HOME/.nvm/nvm.sh"
if nvm list | grep -q "v21."; then
  echo "Node.js 21 is already installed."
else
  echo "Installing Node.js 21..."
  nvm install 21
fi
if ! command -v pm2 &> /dev/null; then
  echo "Installing pm2..."
  npm install -g pm2
else
  echo "pm2 is already installed."
fi

# 检查并生成SSH Ed25519密钥对
if [ ! -f ~/.ssh/id_ed25519 ]; then
    echo "Generating SSH Ed25519 key pair..."
    ssh-keygen -t ed25519 -a 100 -N "" -f ~/.ssh/id_ed25519
    echo "SSH Ed25519 key pair generated."
else
    echo "SSH Ed25519 key pair already exists."
fi

echo "所有指定的软件已安装完成。"