sed is a stream editor that accepts a list of commands and input file names. It applies the commands one by one on each line of input and writes the resulting lines on the standard output. The commands are separated by newlines.… Read more
A shell provides a user interface to a computer system. There are two types of shells, the command line interface (CLI) and the graphical user interface (GUI). In this tutorial, we describe the command line interface shell only and refer to it simply as shell
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vi is a classic text editor that has been available with Unix systems right from the beginning. vi has been a very popular text editor and one can edit files very efficiently using it. In this tutorial, we look at some of the vi commands that make it such a powerful editor.… Read more
