tldr/pages/common/ssh.md

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# SSH
> Secure Shell is a protocol used to securely log onto remote systems.
> It can be used for logging or executing commands on a remote server.
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- connecting to a remote server
`ssh {{username}}@{{remote_host}}`
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- connecting to a remote server with a specific identity (private key)
`ssh -i {{/path/to/key_file}} {{username}}@{{remote_host}}`
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- connecting to a remote server with specific port
`ssh {{username}}@{{remote_host}} -p {{2222}}`
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- run a command on a remote server
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`ssh {{remote_host}} {{command -with -flags}}`
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- ssh tunneling: dynamic port forwarding (SOCKS proxy on localhost:9999)
`ssh -D {{9999}} -C {{username}}@{{remote_host}}`
- ssh tunneling: forward a specific port (localhost:9999 to slashdot.org:80)
`ssh -L {{9999}}:slashdot.org:80 {{username}}@{{remote_host}}`
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- ssh enable agent forward
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`ssh -A {{username}}@{{remote_host}}`