cd sample
go build -o sample.exe

C:\work\utf16>sample.exe u16le.txt
FF,FE,49,00,74,00,27,00,73,00,20,00,62,00,65,00,74,00,74,00,65,00,72,00,20,00,74,00,6F,00,20,00,62,00,75,00,72,00,6E,00,20,00,6F,00,75,00,74,00,20,00,74,00,68,00,61,00,6E,00,20,00,74,00,6F,00,20,00,66,00,61,00,64,00,65,00,20,00,61,00,77,00,61,00,79,00,2E,00,0D,00,0A,00,0D,00,0A,00,60,30,93,30,60,30,93,30,88,6D,48,30,66,30,44,30,4F,30,88,30,8A,30,CA,4E,C3,71,48,30,3D,5C,4D,30,8B,30,B9,65,4C,30,44,30,44,30,02,30,
[It's better to burn out than to fade away.

だんだん消えていくより今燃え尽きる方がいい。]

C:\work\utf16>sample.exe u16be.txt
FE,FF,00,49,00,74,00,27,00,73,00,20,00,62,00,65,00,74,00,74,00,65,00,72,00,20,00,74,00,6F,00,20,00,62,00,75,00,72,00,6E,00,20,00,6F,00,75,00,74,00,20,00,74,00,68,00,61,00,6E,00,20,00,74,00,6F,00,20,00,66,00,61,00,64,00,65,00,20,00,61,00,77,00,61,00,79,00,2E,00,0D,00,0A,00,0D,00,0A,30,60,30,93,30,60,30,93,6D,88,30,48,30,66,30,44,30,4F,30,88,30,8A,4E,CA,71,C3,30,48,5C,3D,30,4D,30,8B,65,B9,30,4C,30,44,30,44,30,02,
[It's better to burn out than to fade away.

だんだん消えていくより今燃え尽きる方がいい。]