如何实现readlink查找路径

这使用的readlink（）函数正确的正确使用

readlink

如果您的路径位于中

std::string

#include <unistd.h>#include <limits.h>std::string do_readlink(std::string const& path) {    char buff[PATH_MAX];    ssize_t len = ::readlink(path.c_str(), buff, sizeof(buff)-1);    if (len != -1) {      buff[len] = '';      return std::string(buff);    }    }

如果只在固定路径下走：

std::string get_selfpath() {    char buff[PATH_MAX];    ssize_t len = ::readlink("/proc/self/exe", buff, sizeof(buff)-1);    if (len != -1) {      buff[len] = '';      return std::string(buff);    }    }

要使用它：

int main(){  std::string selfpath = get_selfpath();  std::cout << selfpath << std::endl;  return 0;}