How to generate a public key?

To generate a public key, you can use the ssh-keygen command. Here are the steps:

Open your terminal.
Run the following command:
```
ssh-keygen -t rsa -b 4096 -C "your_email@example.com"
```
- -t rsa specifies the type of key to create (RSA).
- -b 4096 specifies the number of bits in the key (4096 is recommended for better security).
- -C "your_email@example.com" adds a comment (usually your email) to the key.
Follow the prompts:
- You will be asked where to save the key. Press Enter to accept the default location (~/.ssh/id_rsa).
- You can also set a passphrase for added security, or press Enter to leave it empty.
Locate your public key: After the process is complete, your public key will be saved in the file ~/.ssh/id_rsa.pub. You can view it with:
```
cat ~/.ssh/id_rsa.pub
```

You can now copy this public key to the target system's authorized_keys file to enable SSH access.