What is the use of the 'scp' command in Linux?

The 'scp' command in Linux is specifically designed to securely copy files between hosts on a network. It utilizes SSH (Secure Shell) for data transfer, which means that it encrypts the contents being transferred as well as the authentication information, ensuring that both the data and credentials are protected during the transfer process.

This command is particularly useful in scenarios where files need to be moved between different machines, which might be located either on the same network or across the internet. It provides a straightforward and efficient means to transfer files while maintaining security, making it popular among system administrators and users alike who need to manage files remotely.

In contrast, other options do not pertain to file transfers: scheduling tasks is typically performed using commands like 'cron' or 'at', checking system resource usage can be done with commands like 'top' or 'htop', and configuring network settings usually involves commands such as 'ifconfig' or 'ip'. Each of these tasks serves a different purpose in system management, highlighting the unique function of the 'scp' command within the Linux environment.