Generate Time-based One-time Password

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How to Use

# ** Add New Definition
# otpauth://totp/Example:hoge@example.com?secret=NBXWOZLGOVTWC===&issuer=Example
# totp add [issuer] [account name] [secret]
totp add Example hoge@example.com NBXWOZLGOVTWC===

# ** Generate
totp
> No     ISSUER      IDENTIFIER           TOTP      REMAINING
> 0      Example     hoge@example.com     376947    21

# ** Delete Definition
# totp delete [index]
totp delete 0