sdtest.c

周立功magic2410实验箱源码 第6章Linux高级实验(part1) 6.1 Linux内核编译实验 6.2 Linux根文件系统实验 6.3 CAT1025读/写实验. 6.4 ZL

#include <stdio.h>
#include <unistd.h>
#include <fcntl.h>                                /* 文件操作 */
#include <sys/stat.h>
#include <sys/types.h>


int main(void)
{
    FILE *fp;
    int num;
    int folder;
    char a[14] = "Hello Linux!\n";
    
    fp = fopen("/tmp/sd/linux.txt","w+");
    if(fp == NULL)
    {
        printf("\nCan't open linux.txt!\n");
        exit(-1);
    }

    num = fwrite(a, sizeof(a), 1, fp);
    printf("%d byte data has written to linux.txt\n", num*sizeof(a));

    folder = mkdir("/tmp/sd/linux", 1);
    if(folder == -1)
    {
        printf("\n Cann't create folder linux!\nIt has existed or the path is error!\n");
        exit(-1);
    }
    printf("Folder linux created success!\n");

    close(fp);
    return 0;
}