shell里面打印utf-8字符

有一天突发奇想，怎么在shell里面打印utf-8字符呢？搜索下了发现不少办法。

１. 使用echo 和printf
例如打印欧元符号，首先通过网页
https://www.w3schools.com/charsets/ref_utf_currency.asp
可以查到欧元的dec 是8364, hex是20ac.

root@kali:/usr/local/src/py/project_dirs# printf '\U20AC\n'
?
root@kali:/usr/local/src/py/project_dirs# printf '\u20ac\n'
?
root@kali:/usr/local/src/py/project_dirs# echo -e '\u20ac'
?
root@kali:/usr/local/src/py/project_dirs# echo -e '\U20AC'
?

２. 使用python.

In [5]: chr(8364)
Out[5]: '?'

In [6]: chr(0x20ac)
Out[6]: '?'

3. 使用unicode.
在kali linux上安装unicode 很简单.

apt-get install unicode

root@kali:/usr/local/src/py/project_dirs# unicode 20ac
U+20AC EURO SIGN
UTF-8: e2 82 ac UTF-16BE: 20ac Decimal: ?; Octal: \020254
?
Category: Sc (Symbol, Currency)
Unicode block: 20A0..20CF; Currency Symbols
Bidi: ET (European Number Terminator)

root@kali:/usr/local/src/py/project_dirs# unicode -d 8364
U+20AC EURO SIGN
UTF-8: e2 82 ac UTF-16BE: 20ac Decimal: ?; Octal: \020254
?
Category: Sc (Symbol, Currency)
Unicode block: 20A0..20CF; Currency Symbols
Bidi: ET (European Number Terminator)

4. 参考网站: