[root@localhost ~]# mount -t cifs //192.168.20.132/pub /share
mount: wrong fs type, bad option, bad superblock on //192.168.20.132/pub,
missing codepage or helper program, or other error
(for several filesystems (e.g. nfs, cifs) you might
need a /sbin/mount.<type> helper program)
In some cases useful info is found in syslog - try
dmesg | tail or so.
解决办法
yum -y install cifs-utils