[root@ufuso ~]# mount -t cifs 172.31.254.51:/fs /mnt/fs  -o username=xxxxxxxx
WARNING: using NFS syntax for mounting CIFS shares is deprecated and will be
removed in cifs-utils-6.0. Please migrate to UNC syntax.　←　WARNINGが出た。
172.31.254.51:/fsはWindows FileServer's IP:folder、 /mnt/fsはmount先のfolder、
 -oはoption、 usernameはFileServerでのyour-user-name
Password:　←　FileServerでのyour-Password. mount is ok

[root@ufuso ~]# which mount.cifs　←　mount.cifsがあるか確認
/sbin/mount.cifs　←　あった

[root@ufuso ~]# yum install samba-client　←　mount.cifsが無ければこれをinstall

[root@ufuso ~]# mount -t cifs -o username=xxx,password=xxx,uid=xxx,gid=xxx,file_mode=0700,dir_mode=0700 //172.31.254.51/fs /mnt/fs
　←　usernameとpasswordはWindows fileserver上のあなたのそれ。uidはcentos上のyour-
user-name,gidはcentos上のyour-group-name
　←　No Warning