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Re:Ask HN: What weird or hard problems are you trying to solve? by drusepth on Monday July 06, 2020 @05:49AM (#23746183)
I recently used magic-wormhole [1] for this. It was a 1-line command that gave me a keyphrase that I told to someone else. They typed the same command on their end, put in the keyphrase, and received my file.

No IPs, no forwarding ports or files. It was a magical experience and Just Worked.

[1] https://github.com/warner/magic-wormhole

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