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Course Content


The shell is a command-line interpreter for Linux. It acts as a conduit between the user and the kernel, executing programmes known as commands. When a user types ls, for example, the shell runs the ls command.

Different Types of Shells in Linux:

  • Linux vs UNIX.
  • crontab command.
  • ls command.
  • grep command.
  • mkdir command.
  • ps command.
  • awk command.

A Shell is a command-line interface to the Unix operating system. It collects data from you and runs programmes depending on that data. The output of a programme is displayed once it has completed its execution. Shell is a command-line interface that allows us to run commands, programmes, and shell scripts.

The Run command in Linux is a convenient way to quickly run a programme by typing it and executing it. To use the Run command, press Alt-F2 to bring up the Run Command window. The run command can also be accessed by pressing Alt-F2. After that, type the name of the software you'd like to run.

Shell takes human-readable commands from the user and translates them into kernel-friendly commands. It's a command language interpreter that can read commands from keyboards or files and execute them. When a user logs in or launches a terminal, the shell is launched.

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