使用C++把检查虚拟机环境的方法全部封装为一个个函数

好的，下面是一个参考实现：

#include <iostream>
#include <string>
#include <vector>

using namespace std;

// 检查操作系统类型
bool checkOS() {
    #ifdef __linux__
        cout << "OS: Linux" << endl;
        return true;
    #elif _WIN32
        cout << "OS: Windows" << endl;
        return true;
    #else
        cout << "Unsupported OS." << endl;
        return false;
    #endif
}

// 检查CPU架构
bool checkCPU() {
    #ifdef __x86_64__
        cout << "CPU: x86_64" << endl;
        return true;
    #elif __arm__ || __aarch64__
        cout << "CPU: ARM" << endl;
        return true;
    #else
        cout << "Unsupported CPU." << endl;
        return false;
    #endif
}

// 检查内存大小
bool checkMemory(int minSizeGB) {
    long pages = sysconf(_SC_PHYS_PAGES);
    long page_size = sysconf(_SC_PAGE_SIZE);
    long total_size = pages * page_size;
    int total_size_GB = total_size / (1024 * 1024 * 1024);
    if (total_size_GB >= minSizeGB) {
        cout << "Memory: " << total_size_GB << "GB" << endl;
        return true;
    } else {
        cout << "Insufficient memory." << endl;
        return false;
    }
}

// 检查硬盘空间
bool checkDiskSpace(int minSpaceGB) {
    FILE* f = popen("df -BG / | awk 'NR==2{print $4}'", "r");
    if (f == NULL) {
        cout << "Failed to execute command." << endl;
        return false;
    }
    char buf[128];
    fgets(buf, sizeof(buf), f);
    pclose(f);
    int freeSpaceGB = stoi(buf);
    if (freeSpaceGB >= minSpaceGB) {
        cout << "Disk space: " << freeSpaceGB << "GB" << endl;
        return true;
    } else {
        cout << "Insufficient disk space." << endl;
        return false;
    }
}

// 检查是否安装了指定软件
bool checkSoftware(string softwareName) {
    FILE* f = popen(("which " + softwareName).c_str(), "r");
    if (f == NULL) {
        cout << "Failed to execute command." << endl;
        return false;
    }
    char buf[128];
    fgets(buf, sizeof(buf), f);
    pclose(f);
    string result(buf);
    if (result.empty()) {
        cout << softwareName << " not found." << endl;
        return false;
    } else {
        cout << softwareName << " found at " << result << endl;
        return true;
    }
}

int main() {
    vector<string> requiredSoftware = {"gcc", "g++", "make", "python3"};

    bool osOK = checkOS();
    bool cpuOK = checkCPU();
    bool memoryOK = checkMemory(8);
    bool diskSpaceOK = checkDiskSpace(50);
    bool softwareOK = true;
    for (string s : requiredSoftware) {
        if (!checkSoftware(s)) {
            softwareOK = false;
            break;
        }
    }

    if (osOK && cpuOK && memoryOK && diskSpaceOK && softwareOK) {
        cout << "Virtual machine environment is ready." << endl;
    } else {
        cout << "Virtual machine environment is not ready." << endl;
    }

    return 0;
}

这里我们使用了 `sysconf` 和 `popen` 来获取系统信息和执行命令。`sysconf` 可以获取系统参数，如内存大小和页面大小，而 `popen` 可以执行命令并获取其输出。在这个实现中，我们使用了 `df` 命令来获取磁盘空间信息，使用了 `which` 命令来检查是否安装了指定的软件。

以上是一个简单的封装检查虚拟机环境的函数的例子，实际应用中还需要根据具体需求进行修改。