Ubuntu에서 Base64로 인코딩, 디코딩하기

$ echo "password" | base64
cGFzc3dvcmQK

$ base64
admin
password
^D # Control+D
# result
YWRtaW4KcGFzc3dvcmQK

$ echo "cGFzc3dvcmQK" | base64 --decode
password

$ base64 --decode
YWRtaW4KcGFzc3dvcmQK
^D # Control+D
# result
admin
password