Very Simple My Own Shell in C

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 #include<stdio.h>  
 #include<stdlib.h>  
 #include<string.h>  
 int main(){  
       char buf[256]={0};  
       printf("\n\n\n");  
       while(1){  
            printf("\nMOSH : ");  
            if (fgets(buf, sizeof(buf), stdin) == NULL){  
                fprintf(stderr, "Invalid input command!\n");  
                exit(-1);  
              }  
              buf[strlen(buf)-1]='\0';  
            system(buf);  
       }       
       return 0;  
 }