userpasswd.c

这是一个同样来自贝尔实验室的和UNIX有着渊源的操作系统, 其简洁的设计和实现易于我们学习和理解

#include <u.h>
#include <libc.h>
#include <auth.h>

void
usage(void)
{
	fprint(2, "usage: auth/userpasswd fmt\n");
	exits("usage");
}

void
main(int argc, char **argv)
{
	UserPasswd *up;

	ARGBEGIN{
	default:
		usage();
	}ARGEND

	if(argc != 1)
		usage();

	up = auth_getuserpasswd(auth_getkey, "proto=pass %s", argv[0]);
	if(up == nil)	/* bug in factotum, fixed but need to reboot servers -rsc, 2/10/2002 */
		up = auth_getuserpasswd(nil, "proto=pass %s", argv[0]);
	if(up == nil)
		sysfatal("getuserpasswd: %r");

	quotefmtinstall();
	print("%s\n%s\n", up->user, up->passwd);
	exits(0);
}