在samba配置好后可以用usr@host:~$testparm验证当前配置。因为有一些没生效的配置不会出现在这里，如果和你所想要的配置有差别，在这个函数的输出就能看到。如：我在设置无密码访问共享资源时怎么设置都不生效，后来发现是guest account = nobody的问题，不能设置成nobody，后来我改成别的用户就好使了。

Load smb config files from /etc/samba/smb.conf
rlimit_max: increasing rlimit_max (1024) to minimum Windows limit (16384)
WARNING: The "syslog" option is deprecated
Processing section "[printers]"
Processing section "[share]"
Loaded services file OK.
Server role: ROLE_STANDALONE

Press enter to see a dump of your service definitions

# Global parameters
[global]
	server string = %h server (Samba, Ubuntu)
	server role = standalone server
	security = USER   #很多文章都说这里要设置成share才能完成无密码访问，但share这个参数在我使用的Version 4.3.11-Ubuntu版本中已经取消了。
	map to guest = Bad User
	obey pam restrictions = Yes
	guest account = wanglei
	pam password change = Yes
	passwd program = /usr/bin/passwd %u
	passwd chat = *Enter\snew\s*\spassword:* %n\n *Retype\snew\s*\spassword:* %n\n *password\supdated\ssuccessfully* .
	unix password sync = Yes
	syslog = 0
	log file = /var/log/samba/log.%m
	max log size = 1000
	dns proxy = No
	usershare allow guests = Yes
	panic action = /usr/share/samba/panic-action %d
	idmap config * : backend = tdb   #新版本中并不使用smbpasswd文件存放samba用户，而是用数据库存，想要查看用哪些用户要使用pdbedit -L这个命令要有super权限。


[printers]
	comment = All Printers
	path = /var/spool/samba
	create mask = 0700
	printable = Yes
	browseable = No


[share]
	comment = share files
	path = /mnt/lvdir/downloads/share
	read only = No
	create mask = 0777
	guest only = Yes
	guest ok = Yes