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In computing, a command is a directive to a computer program to perform a specific task. It may be issued via a command-line interface or as input to a network service as part of a network protocol , or as an event triggered in a graphical user interface .
- Shell (computing) - Wikipedia
In computing, a shell is a computer program that exposes an...
- Shell (computing) - Simple English Wikipedia, the free ...
In simple words - a shell is a program that accepts the...
- Command - Wikipedia
Computing. Military. Music. Sports. Other uses. See also....
- Shell (computing) - Wikipedia
A command-line interface ( CLI) is a means of interacting with a computer program by inputting lines of text called command-lines. Command-line interfaces emerged in the mid-1960s, on computer terminals, as an interactive and more user-friendly alternative to the non-interactive interface available with punched cards .
Jul 21, 2016 · A Brief History. Way back in the 1960s — 70s, computers were becoming more than just calculators. They could save files to disk and have multiple running applications with multiple users. But these things were difficult to control and easy to break. Thankfully, there was a very smart idea to cover all these internal bits in a nice, usable shell.
A computer is a machine that uses electronics to input, process, store, and output data. Data is information such as numbers, words, and lists. Input of data means to read information from a keyboard, a storage device like a hard drive, or a sensor. The computer processes or changes the data by following the instructions in software programs.
