Unix vs Linux | Difference Between Linux and Unix | Intellipaat

Unix vs Linux | Difference Between Linux and Unix | Intellipaat


The soul of every computer is its OS, the
operating system. There are many operating systems in existence today. We are going to discuss two basic ones, Linux and Unix. There has been much discussions and debate going on comparing both of these. Though Linux is derived from Unix and they are different operating systems, right? So, today we are going to put an end to this
debate. Hey guys, welcome back to yet another interesting
video on a V/S topic, and today’s video is gonna be all about Unix Vs Linux. So, before we proceed forward, do subscribe
to Intellipaat’s Youtube channel, so that you never miss out on any of our future
videos. Now,let’s have a look at the agenda for
today’s video: First and foremost we’ll understand that
What exactly are both Unix and Linux After that, we will look into the features
of both unix and linux. Then, we will discuss the key differences
between linux and unix based on few of a parameters such as:
Invention, Users, Processor, Source Code Availability and so on. Moving on, we will see the limitation in both
unix and linux. Then finally, we will conclude our video by
discussing which one is better? We’ll also have a short quiz based on the
video, make sure that you put down your answers in the comment section below, to know if you
are correct. Also, guys, if you are looking to get Certified
in Linux, then do check out Intellipaat’s Linux Certification Training Course. Alright guys, now, without any further ado,
let’s get started! So, we’ll first talk about the introduction
of UNIX and LINUX: What is UNIX? UNIX OS was invented by Dennis Ritchie and
Ken Thompson in the late 1970s at the Bell Labs research center. It was written in C language, so the Operating
System is multi-user, multitasking and allowed good acceptance. Unix os works on Command line Interface or
CLI, but now, there have been developments for GUI(Graphical user interface) also on
Unix systems. Unix systems are featured by modular design
which is also known as UNIX philosophy. And UNIX philosophy includes certain characteristics
like: the OS provides a set of tools and each tool performs well-defined and limited functions. For data storage plain text is used. And it has a hierarchical file system and
it also handles devices and some special kinds of inter-process communication (IPC) as files
and a lot more. In other words, you can also say that UNIX
is nothing but a commercial product that was sold by AT&T. It started as a one-man project under the
guidance of Ken Thompson of Bell Labs. And With time, it became the most widely used
OS. And, it’s used in workstations, Internet
Servers, and personal computers by HP,Intel, Solaris and so on. Mac OS is the most popular version of UNIX
which is used these days. LINUX: Linux is an operating system which was invented
by Linus Torvalds at the University of Helsinki in 1991. The “Linux” name originated from the LINUX
kernel. Or in other words you can say that it’s
just a kernel (software) and is not the full operating system unlike UNIX . And the software
is used on the computer which allows applications and users to access the devices on the computer
to perform some specific/defined function. Or to make it more clear you can consider
Linux as an engine(i.e. Just a kernel) and Unix as a Car (i.e. the
entire operating system). Most people often get confused that “Linux
is a version of UNIX”. Let me tell you that it’s not a version
of UNIX rather it’s UNIX like OS or clone of UNIX. It was derived from UNIX i.e. the same model
or ideology was followed as the Unix programming environment and the UNIX philosophy while
developing it. But, it doesn’t share any files with the
original version of UNIX. It gained a lot of interest and support as
it’s an open source i.e. freely available to the public. It’s majorly used for computer software
and hardware, tablet PCs, Mainframes, game development and so on. There are more than 10 Linux based mobile
operating systems are available like Ubuntu Mobile,Ubuntu Touch, Sailfish OS and so on. And 9 out of top 10 clouds run on Linux. And then further we’ll discuss about characteristics
or features of Unix and Linux OS. Characteristics of UNIX OS:
Unix OS can be used as the master control program in workstations and servers. It supports multi-user and multitasking os. Unix is considered as very safe as it’s
harder to infect as the source is not available. Unix has generally closed source mode, but
a few unix projects are open source as well such as BSD (Berkley Software Distribution)
OS and illumos OS Characteristics of Linux Operating System
It supports multitasking that means at a time user can open multiple terminals on a desktop
with windows and can work on them simultaneously. And it also supports multi-user programming. In Linux, Programs consist of one or more
processes, and each process has one or more threads. Linux is derived from UNIX but does not use
its code. It can also easily co-exists along with other
Operating systems. Differences between Unix and Linux:
Invention: Unix systems have various versions and these versions was invented by AT&T. Whereas, Linux’s original code was developed
by Linus and the GNU foundation Usage: UNIX can be used in workstations, internet
servers, and PCs. Whereas, Linux OS can be installed on various
things like tablet computers, smartphones, servers, mainframes, supercomputers and so
on. Users: Unix was developed mainly for workstations
servers,and mainframes, etc. apart from OSX, Which is designed for everyone. But, Linux can be used by almost everyone
i.e. developers to home users and computer enthusiasts as well
Processor: Unix OS is available on PA-RISC and Itanium machines supporting processors
like, Sparc, Power, x86/x64, Itanium, PA-RISC, PowerPC, and a lot more. But, Linux was initially developed for Intel’s
x86 hardware processors.It is available for more than twenty different types of CPU which
also includes an ARM. Viruses: In Unix, there are around 70 to 110
viruses has been posted till date. Whereas, in Linux about 50-90 viruses detected
up till today that are successfully removed now. Detection of Threat: Unix users need longer
wait time, to get proper bug fixing patch. Whereas, In Linux, threat detection and solution
is very fast as it’s community driven. So, suppose if any Linux user shows any kind
of threat, qualified developers team starts working to resolve that particular threat. Supported file system: In Unix, the filesystems
supported by file types are like hfx, GPS, xfs, zfs, etc. But, In Linux, the filesystems supported by
file types are like devpts, NTFS,xfs,nfs, cramfsm and so on. Versions: Unix systems have various versions
like: HP-UX, BSD, AIS etc. Whereas, Linux has different versions like
Ubuntu,Redhat,Solaris, OpenSuse and so on. Portability: Unix is not portable.But, Linux
is portable and is booted from a USB Stick. Interface:UNIX originally uses Bourne shell. And this is also compatible with Korn, C and
other graphical user interfaces(GUIs). Whereas, In Linux, default interface is BASH(Bourne
Again SHell).But also support multiple command interpreters
GUI(Graphical User Interface):Linux is command based but some computer software distribution
packages provide GUI based Linux. Gnome and KDE are majorly used GUI. But, Unix was initially command based OS,
but later Common Desktop Environment was created and most of the Unix distributions use Gnome. Cost: Different versions of Unix systems have
different cost structures as per their respective vendors. But, Linux is freely distributed, downloaded
through website. There are paid versions as well. But, there’s very little difference between
the paid and unpaid versions apart from the support contract. Source code: Unix was developed by various
vendors like HP, IBM, Solaris, Intel, etc. for their business requirements. So, they won’t distribute the source code
to the public. However, there are a few UNIX source codes
which are open-source, like NetBSD, OpenBSD, and FreeBSD. Whereas, Linux has been developed and the
source code has been distributed or made public under GNU license
Limitations of UNIX: Unix Operating System is generally designed
for slow computer system, Hence, fast performance can’t be expected. Unix system’s versions on different machines,slightly
differ, so it lacks consistency. It has a rigid environment of the hardware. Hence, it cannot be installed on every other
machine. In this, shell interface can be unsafe sometimes,
because typing mistake can destroy files. User interface is unfriendly, abrupt and inconsistent
in this. Most of the source code of Unix is not available
for the general public. Limitations of Linux:
Standard edition of Linux are not available. Linux is, for new users at least, not as easy
to use as Windows. Most of the programs that are used for Windows
will only run on Linux with the help of a complicated emulator. Ex: Microsoft Office. Linux has patchier support for drivers which
may result in misfunctioning of the entire system. Summary
The major difference between Linux and Unix based
operating systems is not in the presentation part, but at the kernel part i.e. how exactly
they work internally. So, in other words you can also say that the
major differences between them depend upon which exact versions of Linux and Unix you
are comparing. The main reason behind the popularity of Linux
is that it’s an open source or freely available. Whereas, UNIX Operating Systems are not. So, cost is always a major factor while choosing
the technology one over the other. And Linux definitely has an edge regarding
this. Linux OS is more flexible and free to modify
as compared to Unix systems and this is where Linux has more user base and popularity. But, if we discuss about the commands in Unix
and Linux, they are not exactly the same but are very much similar. Technical giants like HP, Intel, Solaris uses
Unix internet servers, Workstations and PCs. And Linux is widely used for computer software
& hardware, tablet, gaming, mainframes and so on. Simply put, one can easily conclude by looking
at the Linux growth rate that any other OS is left far behind when it comes to the current
market trend. And there is a high possibility that in the
future, Linux may overtake Unix installation. Or you can say Linux is the clear winner here. Quiz:
Q: In the options mentioned below which one can talk to the kernel? – Shell script
– System calls – Shell
– System instruction None of the above
I hope this video was helpful to you. If you have any further queries, then do let
us know in the comments section below, we will reach out to you immediately So guys, thank you so much for watching this
video and giving us your precious time.