Ubuntu 查尋 unicode

$ apt-get install unicode
$ unicode 中文
U+4E2D CJK UNIFIED IDEOGRAPH-4E2D
UTF-8: e4 b8 ad UTF-16BE: 4e2d Decimal: 中
中 (中)
Uppercase: U+4E2D
Category: Lo (Letter, Other)
Bidi: L (Left-to-Right)

U+6587 CJK UNIFIED IDEOGRAPH-6587
UTF-8: e6 96 87 UTF-16BE: 6587 Decimal: 文
文 (文)
Uppercase: U+6587
Category: Lo (Letter, Other)
Bidi: L (Left-to-Right)

$ unicode -x 4e2d
U+4E2D CJK UNIFIED IDEOGRAPH-4E2D
UTF-8: e4 b8 ad UTF-16BE: 4e2d Decimal: 中
中 (中)
Uppercase: U+4E2D
Category: Lo (Letter, Other)
Bidi: L (Left-to-Right)