访问网络文件共享服务

yum install nfs-utils -y
yum install rpcbind

showmount -e 192.168.0.254 显示NFS共享的服务
mount 192.168.0.254:/var/ftp/pub  /share挂载到本地
umount /share
2.yum install cifs-utils -y
yum install samba-client -y
mount //i/pub /share/ -o user=guest2018
开机自动挂载
vi /etc/fstab
192.168.0.254:/var/ftp/pub /share   nfs  defaults 0 0
//192.168.0.254/pub  /test   cifs user=guest2017,password=password 0 0
mount -a 验证
yum install autofs -y
/etc/init.d/autofs start
cd /net/192.168.0.254

按需挂载
cat /etc/auto.master
/misc   /etc/auto.misc
/share  /etc/auto.share先定义父级目录 /share
cat /etc/auto.share
ftp   -ro  192.168.0.254:/var/ftp/pub  再定义子目录 /share/ftp
/etc/init.d/autofs reload
cd /share/ftp就会出现/var/ftp/pub的内容，5分钟不用就不见来

-G为附加组 -g为主要组 -s /bin/nologin -m
userdel -r删除家目录
echo hehe | passwd --stdin  test 给test改密码
passwd -u解锁  -l枷锁