Linux Commands Reference - Complete Linux Command Guide

Comprehensive Linux command reference with 150+ commands. Search, filter by category, and view detailed usage examples.

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ssh-keygen

Generate, manage and convert SSH keys

Syntax

ssh-keygen [OPTION]...

Common Options

-tSpecify key type
-bSpecify key bits
-CAdd comment
-fSpecify key filename
-pChange key passphrase
-lShow key fingerprint
-RRemove host from known_hosts

Common Examples

ssh-keygen -t ed25519 -C "user@email.com"

Generate ED25519 key

ssh-keygen -t rsa -b 4096

Generate 4096-bit RSA key

ssh-keygen -l -f ~/.ssh/id_rsa

Show key fingerprint

ssh-keygen -p -f ~/.ssh/id_rsa

Change key passphrase

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