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

Dude, just use `scp` instead. Way simpler for single files:

`scp user@host:/remote/file /local/path`

No need to mess with interactive sftp sessions.

And yeah, SSH keys are the way to go for passwordless stuff. Google "ssh key setup" and you’ll find a ton of guides.