自己的myshell

#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
int main(void)
{
	while(1){
		char buff[20]="\n";
		putchar('>');
		fflush(stdout);
		fgets(buff,20,stdin);//end\n\0\0
		if(strcmp(buff,"end\n")==0){
			return 0;
		}
		if(strcmp(buff,"ls\n")==0){
			system("ls|cat > a.txt");
		}
		if(strcmp(buff,"cd\n")==0){
			system("cd");
		}
	}
}

运行结果

<pre name="code" class="cpp">>ls
bin  include  obj  src
>end
xfliu@ubuntu:2$