Tarsnap is an online encrypted backup service. It presents a tar-like command-line interface, but stores data online rather than locally; using ideas taken from the author's FreeBSD Update and Portsnap utilities, it maximizes performance by recognizing duplicate data and only storing it once, and cryptographically encrypts and signs archives using locally-held keys in order to guarantee that nobody without access to the key file (including the author) can read or modify archives.
Tarsnap is an online encrypted backup service. It presents a tar-like command-line interface, but stores data online rather than locally; using ideas taken from the author's FreeBSD Update and Portsnap utilities, it maximizes performance by recognizing duplicate data and only storing it once, and cryptographically encrypts and signs archives using locally-held keys in order to guarantee that nobody without access to the key file (including the author) can read or modify archives.
To install tarsnap, run the following command in macOS terminal (Applications->Utilities->Terminal)
sudo port install tarsnap
To see what files were installed by tarsnap, run:
port contents tarsnap
To later upgrade tarsnap, run:
sudo port selfupdate && sudo port upgrade tarsnap
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