{ "version": "https://jsonfeed.org/version/1", "title": "Cheatsheet on Leon Mika", "icon": "https://avatars.micro.blog/avatars/2024/15/55331.jpg", "home_page_url": "https://lmika.org/", "feed_url": "https://lmika.org/feed.json", "items": [ { "id": "http://lmika.micro.blog/2026/08/06/ssh-cheatsheet.html", "title": "SSH Cheatsheet", "content_html": "

Various techniques for working with SSH.

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Generating An Elliptic Curve Key

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To generate an elliptic curve key, rather than an RSA, use one of the algorithms like ed25519:

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$ ssh-keygen -o -a 256 -t ed25519\n

Source: Cryptsus

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Copying Key To Remote Host

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To deploy the public key to a remove host, you could either use the existing method of concatinating the key to ~/.ssh/authorized_keys, or you could use ssh-copy-id:

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$ ssh-copy-id user@hostname.example.com\n

This copies your default identity. To copy an arbitrary key, include the -i switch:

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$ ssh-copy-id -i my_key user@hostname.example.com\n

Source: Stack Overflow

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