how to solve this problem??? please !!!!!!!!

crazyguyu

When I key into some orders ,such as follows, then "Enter",there will be  lots of "????", I need  the reasons to this condition  ,not only "????"  

[root@Charming-yezi root]# mkdir /root/test123/test
mkdir: ??????'/root/test123/test': ?????????


[root@Charming-yezi root]# df
????               1K-?        ??     ?? ??% ???
/dev/hda11             6190664   4782604   1093592  82% /
/dev/hda10              101089      9325     86545  10% /boot
/dev/hda14             4546016    429800   3885284  10% /home
none                    127632         0    127632   0% /dev/shm
/dev/hda12             1035660    298080    684972  31% /var
/dev/hda7             20962560  19638240   1324320  94% /mnt/winf

    I am a primary leaner,I don't know how to solve the problem :how to chang "????" "?"
"??" "???" into English words or chinese. Thank you !

sprite

export LC_ALL=C

crazyguyu

在文本模式下也能显示,太谢谢了您了!谢谢!!