What is the usage of the Linux ssh command?

1 year ago
Noah Thompson
1 minute

The ssh command is used for remotely logging into a Linux server or other remote host. It allows users to securely execute commands or transfer files on the local host.

The basic syntax is as follows:

ssh [选项] [用户名@]主机名 [命令]

I can’t make it to the meeting today.

  1. -p: Specifies the SSH port of the remote host, default is 22.
  2. – Specify the private key file used for authentication.
  3. -l: Specify the username for remote login.
  4. Enable X11 forwarding to allow graphical applications to be run on a remote host and displayed on the local host.
  5. Enable identity verification agent to allow logging into other hosts via SSH.

Example usage:

  1. Accessing the host remotely: ssh username@hostname.
  2. Specify the port number: ssh -p 2222 username@hostname.
  3. Execute a remote command: ssh username@hostname command
  4. Transfer files to a remote host using the command: scp file username@hostname:destination
  5. Download a file from a remote host: scp username@hostname:file destination.

Please make sure that the SSH server is enabled on the remote host and that the local host can access the remote host when using the ssh command.

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