需求：

有两个用户abo和abu;
有三个文件夹：
/samba_workspace/abo/ : 用户abo可访问，拥有读写权限
/samba_workspace/abu/ : 用户abu可访问，拥有读写权限
/samba_workspace/share/ : 用户abo，abu均可访问，均拥有读写权限

步骤

安装samba
apt-get install samba
创建共享文件夹

mkdir -p /samba_workspace/abo
mkdir -p /samba_workspace/abu
mkdir -p /samba_workspace/share

新增用户

useradd abu -s /sbin/nologin
useradd abo -s /sbin/nologin

修改共享文件夹的所有者

chown -R abo:abo /samba_workspace/abo/
chown -R abu:abu /samba_workspace/abu/
chown -R abo:abo /samba_workspace/share/	//先将share的所有者设为abo，然后再用setfacl赋予abu读写权限
setfacl -R -m u:abu:rwx /samba_workspace/share/

向samba新增用户

smbpasswd -a abo
//输入密码
//确认密码
smbpasswd -a abu
//输入密码
//确认密码

修改samba的配置文件

vim /etc/samba/smb.conf
//在文件最后添加
[abo]
   comment = Jimbo's folder
   path = /samba_workspace/abo
   browseable = yes
   read only = no
   create mask = 0774
   directory mask = 0775
   valid users = abo

[abu]
   comment = Poppy's folder
   path = /samba_workspace/abu
   browseable = yes
   read only = no
   create mask = 0774
   directory mask = 0775
   valid users = abu

[share]
   comment = Common share folder
   path = /samba_workspace/share
   browseable = yes
   read only = no
   create mask = 0774
   directory mask = 0775
   valid users = abu,abo
   write list = abu,abo

修改完配置文件后用testparm检查下有无语法错误