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[root@rhel6 ~]# mkfs.ext4 /dev/sda
mke2fs 1.41.12 (17-May-2010)
/dev/sda is entire device, not just one partition!
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  1. pl_014 ÓÚ 2013-01-28 23:01:51·¢±í:

    ¸øÂ¥Ö÷Ò»¸ö·½·¨echo 'y' | mkfs.ext4 /dev/sda
    Õâ¸ö·½·¨Ê¹ÓÃgetcharº¯Êý¶ÁÈ¡±ê×¼ÊäÈ루¼´ÐèÒªÊäÈëÒ»¸ö×Ö·û£¬ÔÙ°´»Ø³µ£©¹ÜÓã¬ÒÔÏÂÊDzο¼¡£[code]$ cat test.c
    #include

    int main()
    {
    int ch;
    ch=getchar();
    printf("%d\n",ch);
    return 0;
    }
    $ echo 'a' | ./test
    97[/code]¶ÔÓÚÂ¥Ö÷¸ø³öµÄÃüÁî±¾È˲»¸ÒËæ±ã³¢ÊÔ£¬Ò²²»»áÕûÒ»¸öÐéÄâÉ豸£¬ÔÝʱҲûÓÐÏëµ½ÆäËüºÃµÄ³¢ÊԵİ취¡£
    ÁíÍ⣬sdaÒ»°ã¶¼ÊÇÓ²ÅÌÉ豸£¬Õâ¸öÃüÁî²»½ö»áÇå¿ÕÕû¸öÓ²ÅÌ£¬»¹¿ÉÄܻᵼÖÂÓ²ÅÌÎÞ·¨Æô¶¯£¬·ÖÇø±íÎÞ·¨±»ÕýÈ·¶ÁÈ¡£¬ÒòΪûÓзÖÇø±í¡£