What is a Shell in Unix OS?

Shell in Unix is a user interface that is used by a user to access Unix services.

Generally a Unix Shell is a command line interface (CLI) in which users enter commands by typing or uploading a file.

We use a Shell to run different commands and programs on Unix operating system.

A Shell also has a command interpreter that can take our commands and send these to be executed by Unix operating system.

Some of the popular Shells on Unix are: Korn shell, BASH, C shell etc.

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