How to download a file by SFTP in Linux? Need help with the command! or What’s the easiest way to dow

Honestly, the `sftp` command you tried is almost right! Just tweak it:

`sftp user@host
get /remote/file /local/path`

Then exit with `bye`.

For passwordless, like others said, SSH keys. Here’s a quick command:
`ssh-keygen -t ed25519` (then copy it over).