Shell 打印特殊字符

In UTF-8 it's actually 6 digit (or 3 byte).

$ echo -e "\x00\xc3\xa6"
æ

:-)

To check how it's encoded by you console, you can use hexdump.

$ echo -n æ | hexdump

0000000 c3 a6                                          
0000002

http://stackoverflow.com/questions/602912/how-do-you-echo-a-4-digit-unicode-character-in-bash