在 Linux 中，你可以使用 socket 编程进行文件传输
服务器端代码（server.c）：
#include <arpa/inet.h>#include <netinet/in.h>#include<stdio.h>#include <stdlib.h>#include<string.h>#include <sys/socket.h>#include <unistd.h>#define PORT 8080#define BUFFER_SIZE 1024int main() { int server_fd, client_fd; struct sockaddr_in server_addr, client_addr; socklen_t client_addr_size; char buffer[BUFFER_SIZE]; FILE *file; // 创建 socket server_fd = socket(AF_INET, SOCK_STREAM, 0); if (server_fd == -1) { perror("socket"); exit(1); } // 配置服务器地址 mEMSet(&server_addr, 0, sizeof(server_addr)); server_addr.sin_family = AF_INET; server_addr.sin_addr.s_addr = htonl(INADDR_ANY); server_addr.sin_port = htons(PORT); // 绑定 socket if (bind(server_fd, (struct sockaddr *)&server_addr, sizeof(server_addr)) == -1) { perror("bind"); exit(1); } // 监听连接 if (listen(server_fd, 1) == -1) { perror("listen"); exit(1); } // 接受客户端连接 client_addr_size = sizeof(client_addr); client_fd = accept(server_fd, (struct sockaddr *)&client_addr, &client_addr_size); if (client_fd == -1) { perror("accept"); exit(1); } // 打开文件 file = fopen("file.txt", "rb"); if (file == NULL) { perror("fopen"); exit(1); } // 读取并发送文件内容 while (!feof(file)) { size_t bytes_read = fread(buffer, 1, BUFFER_SIZE, file); send(client_fd, buffer, bytes_read, 0); } // 关闭文件和 socket fclose(file); close(client_fd); close(server_fd); return 0;}客户端代码（client.c）：
#include <arpa/inet.h>#include <netinet/in.h>#include<stdio.h>#include <stdlib.h>#include<string.h>#include <sys/socket.h>#include <unistd.h>#define SERVER_IP "127.0.0.1"#define PORT 8080#define BUFFER_SIZE 1024int main() { int client_fd; struct sockaddr_in server_addr; char buffer[BUFFER_SIZE]; FILE *file; // 创建 socket client_fd = socket(AF_INET, SOCK_STREAM, 0); if (client_fd == -1) { perror("socket"); exit(1); } // 配置服务器地址 memset(&server_addr, 0, sizeof(server_addr)); server_addr.sin_family = AF_INET; server_addr.sin_addr.s_addr = inet_addr(SERVER_IP); server_addr.sin_port = htons(PORT); // 连接服务器 if (connect(client_fd, (struct sockaddr *)&server_addr, sizeof(server_addr)) == -1) { perror("connect"); exit(1); } // 打开文件 file = fopen("received_file.txt", "wb"); if (file == NULL) { perror("fopen"); exit(1); } // 接收并写入文件内容 while (1) { ssize_t bytes_received = recv(client_fd, buffer, BUFFER_SIZE, 0); if (bytes_received <= 0) { break; } fwrite(buffer, 1, bytes_received, file); } // 关闭文件和 socket fclose(file); close(client_fd); return 0;}要编译和运行这些示例代码，请按照以下步骤操作：
将上述代码分别保存为server.c 和 client.c。使用 gcc 编译器分别编译这两个文件：gcc server.c -o server 和 gcc client.c -o client。首先运行服务器端程序：./server。然后在另一个终端中运行客户端程序：./client。客户端程序将从服务器接收文件并将其保存为 received_file.txt。注意：这个示例代码仅用于演示目的，实际应用中可能需要考虑更多的错误处理和优化。
