Kill命令模拟1

先贴代码

#include<sys/types.h>
#include<signal.h>
#include<stdio.h>
#include<stdlib.h>
#include<unistd.h>

int main(int argc,char* argv[])
{
	pid_t pid_id=0;
	char* pid;
	if(argc!=2)
	{
		fprintf(stderr,"Usage: kill pid \n");
		exit(1);
	}
	pid=argv[1];
	while((*pid)!='\0')
	{
		pid_id=pid_id*10+(*pid-48);
		pid++;
	}
	if(kill(pid_id,SIGINT))
	{
		fprintf(stderr,"Could not kill pid %d \n",pid_id);
		exit(1);
	}
	else
	{
		printf("Kill the pid %d successfully!\n",pid_id);
	}
	exit(0);
}

功能只有结束给定PID的进程

用法:  kill pid