Learn How to Use SSH Command in Linux for Remote Connections

Introduction to SSH Command in Linux

Secure Shell (SSH) is a network protocol that allows secure connection between two computers over an unsecured network. It is widely used by system administrators and developers to access remote machines, execute commands and manage networks. SSH also provides strong authentication and secure communications over insecure networks.

In this article, we will discuss the basics of using the SSH command in Linux. We will explain how to connect to a remote machine, issue commands and transfer files through SSH.

Connecting to a Remote Machine

To connect to a remote machine via SSH, you need to have the correct login credentials. The default login credential for an SSH connection is a username and password. On some systems, you may need to provide an SSH key instead of or in addition to a password.

Once you have the correct credentials, you can connect to a remote system with the command shown below.

$ ssh username@hostname

Replace “username” with your username on the remote machine and “hostname” with the hostname or IP address of the remote machine.

Issuing Commands

Once you are connected to the remote machine, you can execute commands and view the results on your local system. To issue a command, simply type the command at the prompt and press Enter.

$ command

The results of the command will appear on your local system.

Transferring Files

It is also possible to transfer files to and from a remote machine using SSH. To transfer a file from a local system to a remote system, use the scp command as shown below.

$ scp localfile username@hostname:/remotefile

Replace “localfile” with the path to the local file, “username” with your username on the remote system and “hostname” with the hostname or IP address of the remote system.

Conclusion

In this article, we have discussed the basics of using SSH commands in Linux. We have seen how to connect to a remote machine, execute commands and transfer files via SSH. We hope this has been helpful in understanding the basics of SSH in Linux.