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./a.out aa bbb cccc d
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2345 : aa
2356 : bbb
2378 : cccc
2379 : d
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root@localhost usp_ch06]# gcc parentwritepipe.c
[root@localhost usp_ch06]# .a.out aaa bb vv
[3076] aaa
[3076] bb
[3076] vv
[root@localhost usp_ch06]# [3077] aaa
q
bash q command not found
[root@localhost usp_ch06]# .a.out aaa bb vv
[3079] aaa
[3079] bb
[3079] vv
[root@localhost usp_ch06]# [3080] aaa
q
bash q command not found
[root@localhost usp_ch06]#
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C/C++ code:
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <sys/types.h>
#define BUFSIZE 10

int main(int argc,char *argv[])
{
int i=1;
int bytesin;
pid_t childpid;
int fd[2];
if (argc < 2)
{
fprintf(stderr,"Usage: %s command arg1 arg2 ...\n",argv[0]);
return 1;
}
if (pipe(fd) == -1)


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int main()
{
  char x, y, z;
  int i;
  int a[16];
  for(i=0; i<=16; i++)
  {
  a[i] = 0;
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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);
unsign ......
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