Intoduction to Linux

How many of you
heard of Linux ?

What is Linux..??

● Its a Kernel. An Important part of
an operating system.
● Its is not at all related to UNIX.
Althrough commands are same.
● Linus Torvalds created as a project.
● Differnce b/w Linux and GNU/Linux.

How many of you
heard of word Open
Source ?

What is Open-
Source?
● Open Source Software is not Free
Software.
● Programmer gives the source code to
its user.
● Open-source has nothing to do with
FREE.
● Only allowed to see source code but
can't change it.

How many of you
worked on Linux ? Or
used it ?

A Fact
● Most of you have used linux in your
daily life unknowingly.
● Its is used in most of TVs.
● Facebook, Google, Twitter, Amazon
and almost 8 out 10 server use
Linux.
● Android is nothing but Linux.

How many you worked
on open source tools
in your daily life of
computing ?

Why use Linux?

● Rock Solid.

● It just run run run.

● Its performance doesn't descrease with updates
as in windows.

● Free of cost. Low booting time.

● Handles upto 16 Terabytes hard disk.

● Handles more than 100+ filesystems.

● Live user mode. Can be installed inside windows
as well.

Why use Linux?

● Support Dual Boot.
● 0 % piracy.
● Community support.
● Everyday updates.
● Thousands of software release daily.
● New kernel in 3-4 months time.
● Secure: The most secure OS.

Distros/
Distrobutions
● Linux as its heart but do differnt things.
● Like Ubuntu is a Linux based distro for
editing document and light work. Trisquel is
GNU/Linux based OS used for in education,
homes. DSL(Damn Small Linux).
● www.distrowatch.com
● Every distro do things differently. You have
to decide which serve your need.

What is a free
software?
There are 4 freedoms provided :-

● The freedom to run the program, for any
purpose.

● The freedom to study how the program works,
and change it so it does your computing as you
wish.

● The freedom to redistribute copies so you can
help your neighbor

● The freedom to distribute copies of your
modified versions to others

Some FOSS Equivalents to
Proprietary Softwares
Category Proprietary FOSS
Office Microsoft Office, iWork OpenOffice, KOffice, Abiword,
Gnumeric, Lotus Symphony
Desktop Adobe PageMaker Scribus
Publishing
Image Adobe Photoshop GIMP, Inkscape
Manipulation/Gra
phics Production
Email Microsoft Outlook, Outlook Thunderbird
Express
Web Browser Internet Explorer Firefox
Voice Over IP Skype Ekiga
Database Microsoft Access, SQL Server OpenOffice Base, PostgreSQL,
MySQL
Media Player Microsoft Media Player, Power Totem, VLC, Mplayer
DVD
Chat Yahoo Messenger Pidgin, Empathy
Video Editing Adobe Premier, Final Cut Cinelerra, Kino

How they make money...?

1. Support(To learn Free Software)

2. Pay for Commercial Use

3. Lincencing with source code but you
can't edit/change it.

4. You can get the software for free
but you have to pay a regular amount so
that the vendor can't sue you.

Root

● The highest level of anything.
● Root user=admin(windows). Root can
do anything
● Linux based OS are installed in
root(/)=C:(Windows)

The Shell(LUI)

● Is screen you use to interact with
the computer.
● Shell is much more powerful than GUI
in Linux based systems.
● You have to understand its command
to have the real power of Shell.

Using Shell
● Linux is case sensitive
● date
● cal
● clear
● man
● pwd
● ls -a -l

Commands

● mkdir name
● cd directory_name
● rmdir name //empty dir
● cat
● sudo su or sudo su
● cp
● rm

More Command

● touch
● chmod
● dig

In a world
without walls, who
needs windows?

Anshul Sharma

● BTech, Computer Engineering, Jamia
Millia Islamia, New Delhi
● Open source enthusiast, Event Advisor
JMILUG, Chairperson ISTE.
● Email ID: anshul.jmi@gmail.com
● Find me on facebook: fb.me/anshul.jmi

Intoduction to Linux

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