What is a shell? Why and when are command-line interfaces advantageous compared to graphical interfaces?
A shell is a user interface that you use to interact with the operating system of a computer. Usually, people use this term to refer to a command-line shell that allows you to control the OS with a set of textual commands. There are three main advantages of command-line interfaces over GUIs. First, textual commands can be combined and stored and thus form scripts. Second, they require a minimal amount of memory and thus are way more suitable for interacting with remote machines via the internet. Third, command-line interfaces are quite unified across different operating systems—commands on Linux and macOS are identical, and even Windows has either similar or aliased commands.
What exactly does version control mean? Is it suitable for research projects?
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