My only experience in Linux is redhat 7.2, 8 and 9,
The three edition can display and input Simplified (GB) and Traditional (Big 5) character.
In redhat 7.2, should do some works to achieve this,
8 and 9 are simpler to do this.
My Traditional Chinese is poor, I am haven't input in Traditional
Chinese, I am not sure about this.
Here are some Chinese Linux websites,
Hope this is helpful.