01.Introduction.md

Introduction

It is an operating system created in the 1960s.

It is FOSS (Freeware and Open Source Software).

UNIX can be used by multiple users simultaneously, making it a Multi-User operating system.

Several tasks can be executed simultaneously, hence it is a Multi-Tasking operating system.

It is user-friendly and provides support for both CUI (Character User Interface) and GUI (Graphical User Interface).

When compared to Windows, UNIX is more secure.

90% of real-time applications are hosted on the Linux platform.

Commands for Directory and File Creation

• Creating multiple directories at one time:

  mkdir dir{1..50}

• Creating multiple files at one time in a specific directory:

  touch dir{1..50}/file{1..5}

  This command will create 5 text files in each directory, like file1, file2, ...

With a lot of extensions and improvements to the base version, several distributions have been introduced by organizations/companies (such as Red Hat Linux, Ubuntu, CentOS, Fedora, Slackware, openSUSE, SUSE Linux Enterprise Server (SLES), etc.).

All these distributions have a lot of similarities. If we are proficient with one distribution, we can work on any other distribution easily.

Note: A detailed list of Linux distributions can be viewed at distrowatch.com.