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#include <stdio.h>#include <sys/types.h>#include <unistd.h>#include <stdlib.h>#include <stdio.h>#include <sys/wait.h>#define BUFSIZE 1024void parser(char* buf, char** args) ;void execution(char** args) ;int main(int argc, char* argv[]){	char buf[BUFSIZE];	char* args[64];		for(;;)	{		fflush(stdin);		printf("Command:\n"); //   		if(fgets(buf, sizeof(buf),stdin)==NULL)		{			printf("\n"); exit(0);		}		parser(buf,args);		execution(args);	}}void parser(char* buf, char** args){	while (*buf != '\0')	{		while((*buf==' ')||(*buf=='\t')||(*buf=='\n'))		{				*buf++ = '\0';		}		*args++=buf; 				while ((*buf!='\0') && (*buf!=' ') && (*buf!='\t') && (*buf!='\n'))		{			buf++;		}	}		*--args = NULL;	}void execution(char** args){	int pid, status ;	if((pid=fork())<0)	{		perror("fork"); exit(1);	}		if(pid==0)	{		execvp(*args,args);		perror("*args");		exit(1);	}		while (wait(&status)!=pid);	}