Secure Copy is a UNIX standard used to transfer files from one computer to another. He’s how to use the function in macOS, all via the Terminal window.
Before personal computers, there were mainframe computers and timesharing terminals. Users would log in to an account from a terminal to a mainframe, and issue commands to the mainframe to process.As the internet came of age in the 1990s the need arose to be able to use such terminal commands securely across networks and computers. In 1994 a Finnish programmer named Tatu Ylonen created the Secure Shell. For background on using Secure Shell, see our other SSH intro article.
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