SCP
SCP (Secure Copy Protocol) is a command-line tool used for securely transferring files between hosts over a network, typically using SSH for encryption and authentication. It allows users to copy files and directories from a local system to a remote system, from a remote system to a local system, or between two remote systems. SCP is widely available on Unix-like systems (Linux, macOS) and can be used on Windows via tools like PuTTY or WSL.
Developers should learn SCP when they need to securely transfer files in environments where SSH is already configured, such as deploying code to servers, backing up data, or moving configuration files between machines. It is particularly useful in DevOps, system administration, and remote server management scenarios where command-line efficiency and security are priorities, offering a simple alternative to FTP or manual uploads.