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main()
{
    buff[]="ifconfig eth11 ";
    buff1[]="192.168.2.15";
    strcat(buff,buff1);
    system(buff);
}
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main()
{
    buff[]="ifconfig eth11 ";
    buff1[]="192.168.2.15";
    strcat(buff,buff1);
    system(buff);
}
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include <stdio.h>
#include <string.h>
int main()
{
  char buff[27]="ifconfig eth0";
    char  buff1[]=" 192.168.2.17";
      strcat(buff,buff1);
      system(buff);
}

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