Encoding & Decoding
Common Chinese encoding and converter
piconv -f utf8 -t utf8 raw.txt > raw.txt.u8
piconv -f gb2312 -t utf8 raw.txt > raw.txt.u8
piconv -f big5 -t utf8 raw.txt > raw.txt.u8
piconv -f gbk -t utf8 raw.txt > raw.txt.u8
piconv -f iso-8859-1 -t utf8 raw.txt > raw.txt.u8