Ganesh Joshi

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SSH commands

Updated 2026-02-15

SSH, SCP, and SSH key management. Connect to servers, copy files, and manage authorized keys.

Connect and keys

```
ssh user@host
```
SSH into host as user.
```
ssh -i ~/.ssh/key user@host
```
Use specific key.
```
ssh-keygen -t ed25519 -C email
```
Generate key pair.
```
ssh-copy-id user@host
```
Copy public key to host (Linux/macOS).
```
eval $(ssh-agent); ssh-add ~/.ssh/key
```
Add key to agent.

SCP and SFTP

```
scp file user@host:path
```
Copy file to remote.
```
scp user@host:path file
```
Copy file from remote.
```
scp -r dir user@host:path
```
Copy directory recursively.
```
sftp user@host
```
Interactive SFTP session.

Config

~/.ssh/config: Host alias, HostName host, User user, IdentityFile ~/.ssh/key. Then: ssh alias.

SSH commands | Cheatsheet | Ganesh Joshi