Back to Commands

ssh-keygen

file managementLinux/Unix
The ssh-keygen command is one of the most frequently used commands in Linux/Unix-like operating systems. ssh-keygen Sample fallback description for ssh-keygen
See ExamplesView Syntax

Quick Reference

Command Name:

ssh-keygen

Category:

file management

Platform:

Linux/Unix

Basic Usage:

ssh-keygen [options] [arguments]

Common Use Cases

  • 1

    SSH key generation

    Generate SSH keys for secure authentication

  • 2

    Security

    Ensure secure communication between systems

  • 3

    Scripting

    Use in shell scripts to automate SSH key generation

  • 4

    Remote administration

    Administer remote systems securely

Syntax

ssh-keygen [OPTION]... [FILE]...

Options

Option Description
-l Use a long listing format
-a Show hidden entries starting with .
-h Human-readable sizes
-R List subdirectories recursively

Examples

How to Use These Examples

The examples below show common ways to use the ssh-keygen command. Try them in your terminal to see the results. You can copy any example by clicking on the code block.

Basic Examples:

ls
List files in the current directory.
ls -l
List files in long format with details.
ls -a
List all files including hidden ones.

Advanced Examples:

ls -lah Detailed list with human-readable sizes. ls -R List directories recursively.

Try It Yourself

Practice makes perfect! The best way to learn is by trying these examples on your own system with real files.

Understanding Syntax

Pay attention to the syntax coloring: commands, options, and file paths are highlighted differently.

Notes

These are sample notes for the ssh-keygen command.

Tips & Tricks

1

Use the -t option to specify the key type

2

Use the -b option to specify the key length

3

Use the -N option to specify a passphrase

4

Use the -f option to specify the output file

5

Use the -C option to add a comment

Common Use Cases

SSH key generation

Generate SSH keys for secure authentication

Security

Ensure secure communication between systems

Scripting

Use in shell scripts to automate SSH key generation

Remote administration

Administer remote systems securely

Data transfer

Transfer files between systems securely and efficiently

Related Commands

These commands are frequently used alongside ssh-keygen or serve similar purposes:

ssh
ssh-copy-id
ssh-agent
ssh-add
scp
sftp
ssh-import-id
Explore All Commands

Use Cases

1

SSH key generation

Generate SSH keys for secure authentication

2

Security

Ensure secure communication between systems

3

Scripting

Use in shell scripts to automate SSH key generation

4

Remote administration

Administer remote systems securely

5

Data transfer

Transfer files between systems securely and efficiently

Learn By Doing

The best way to learn Linux commands is by practicing. Try out these examples in your terminal to build muscle memory and understand how the ssh-keygen command works in different scenarios.

See ExamplesTry Lab Exercises
$ ssh-keygen
View All Commands
ssh-keygen - Linux Command Guide | LinuxConcept