getlogin.c

UNIX环境高级编程第二版（英文版）配书的源代码

#include "apue.h"

int
main(void)
{
	FILE *fp;
	char *p;

	daemonize("getlog");
	p = getlogin();
	fp = fopen("/tmp/getlog.out", "w");
	if (fp != NULL) {
		if (p == NULL)
			fprintf(fp, "no login name\n");
		else
			fprintf(fp, "login name: %s\n", p);
	}
	exit(0);
}