ubuntu12.04挂载远程nfs目录，出现下面错误：
mount: wrong fs type, bad option, bad superblock on 192.168.xx.xx:/progs,
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
解决方式：
在终端下输入apt-get install nfs-common解决问题