Mpack is a Unix command-line utility used to encode binary files into a format suitable for transmission over email or other text-based protocols. It packages these files in a way that they can be easily provided in email messages and decoded by email clients on the receiving end. Here are some key features and functions of Mpack: 1. **Encoding**: Mpack encodes binary files into a textual representation (using base64 or quoted-printable encoding) that can be included as parts of email messages.
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