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СµÜÏëдÁ½¸öº¯ÊýºÍlinuxϵͳÃüÁîÏàËÆµÄº¯Êý£¬·Ö±ðÊÇchangemodºÍcopy(·Ö±ð¶ÔÓ¦linuxµÄ chmodºÍcp)
µ«ÏÖÔÚÓöµ½Ò»¸öÂ鷳ʣ¬ÎÒÏëÓÃint getCmd(char **argu)Õâ¸öº¯ÊýÀ´¶ÁÈ¡Óû§ÊäÈëµÄÐÅÏ¢£¬intÓÃÓÚ·µ»Ø³É¹¦»òÕßʧ°Ü
¶øÕâ¸öchar **arguÔòÓÃÀ´´«µÝÒ»¸ö¶þά×Ö·û´®Ö¸Õ룬²¢ÔÚ³ÌÐòÖ´ÐÐÕýÈ·ºó·µ»Ø¶ÁÈëµÄÐÅÏ¢

ÀýÈ磬 ÎÒÔÚcmdÏÂÊäÈëÁËcp ./huv ./hxx/hc.f
ÄÇôÔÚÕâ¸öº¯ÊýÀïÓ¦¸Ã»ñµÃÈçÏÂÖ´ÐÐЧ¹û
argu[0] == "cp"
argu[1] == "./huv"
argu[2] == "./hxx/hc.f"
argu[3] == NULL

ÔÚÕâ¸öº¯ÊýÀïÎÒÓÃÁËchar argv[4][128]ÓÃÓÚ±£´æÓû§ÊäÈëµÄÐÅÏ¢
ʹÓÃÁËscanf("%s %s %s", argv[0], argv[1], argv[2]);

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#define type_prompt() (printf("user_type# "))
int getCmd(char **argu)
{
    type_prompt();
    char argv[4][128];
    scanf("%s %s %s", argv[0], argv[1], argv[2]);
    *argv[3] = NULL;

  /*ʣϵľÍÊÇÈçºÎ°ÑargvÀïÃæµÄÄÚÈݸ³Öµ¸øarguÁË£¬¸÷λ¿´¿´ÈçºÎ×ö£¿£¿*/
  ...
}
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#include"stdio.h"
#include"stdlib.h"
void ContrTwo(char i)
{
char str1[8];
itoa(i,str1,2);
printf("%s",str1);
}
unsigned char leftRot(char str,int i);
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