pwd.c

This is to bulid a sample linux shell.

#include<stdio.h>
#include<unistd.h>

int main(int argc,char *argv[])
{
	if(argc!=1)
	{
		printf("daemon: Extra Arguments.\n");
		return 0;
	}
	char buf[500];
	getcwd(buf,sizeof(buf));
	printf("%s\n",buf);
}