Error message: Flag needs an argument: --public-key #Ubuntu #SSH_KEY

Hi, I’m new to DigitalOcean and Linux, thanks for your help!

I’m trying to upload my SSH key to the DigitalOcean server using command

doctl compute ssh-key create <key-name> [flags]

I got a question about this [flags], apparently, I need to pass my public SSH key into this [flags], but what’s the format of it? I mean do I just input

doctl compute ssh-key create my-key-name <SSH KEY content>

or should I input

doctl compute ssh-key create my-key-name --public-key <SSH KEY CONTENT>

and for the SSH KEY content, mine is something like this:

ssh-rsa <a long string> username@hostname

My question is, which part is the ssh-key that I should upload? the <a long string> or the whole string? Because I noticed that there are spaces between these three parts.

Really looking for your help! Thank you so much!

Regards, Xi