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Unix vs Linux | Difference Between Linux and Unix

The soul of every computer is its OS, theoperating 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 interestingvideo on a V/S topic, and today’s video is gonna be all about Unix Vs Linux. Now,let’s have a look at the agenda for today’s Post.

First and foremost we’ll understand thatWhat exactly are both Unix and Linux After that, we will look into the featuresof 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 bothunix and linux. Then finally, we will conclude our video bydiscussing which one is better? We’ll also have a short quiz based on thevideo, make sure that you put down your answers in the comment section below, to know if youare correct. Also, guys, if you are looking to get Certifiedin 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 introductionof UNIX and LINUX: What is UNIX? UNIX OS was invented by Dennis Ritchie andKen Thompson in the late 1970s at the Bell Labs research center.

It was written in C language, so the OperatingSystem is multi-user, multitasking and allowed good acceptance. Unix os works on Command line Interface orCLI, but now, there have been developments for GUI(Graphical user interface) also onUnix systems. Unix systems are featured by modular designwhich is also known as UNIX philosophy. And UNIX philosophy includes certain characteristicslike: 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 andit also handles devices and some special kinds of inter-process communication (IPC) as filesand a lot more. In other words, you can also say that UNIXis nothing but a commercial product that was sold by AT&T. It started as a one-man project under theguidance of Ken Thompson of Bell Labs. And With time, it became the most widely usedOS. And, it’s used in workstations, InternetServers, and personal computers by HP,Intel, Solaris and so on.

Mac OS is the most popular version of UNIXwhich is used these days. LINUX: Linux is an operating system which was inventedby Linus Torvalds at the University of Helsinki in 1991. The “Linux” name originated from the LINUXkernel. Or in other words you can say that it’sjust a kernel (software) and is not the full operating system unlike UNIX . And the softwareis used on the computer which allows applications and users to access the devices on the computerto perform some specific/defined function.

Or to make it more clear you can considerLinux as an engine(i.e. Just a kernel) and Unix as a Car (i.e. theentire operating system). Most people often get confused that “Linuxis a version of UNIX”. Let me tell you that it’s not a versionof UNIX rather it’s UNIX like OS or clone of UNIX. It was derived from UNIX i.e. the same modelor ideology was followed as the Unix programming environment and the UNIX philosophy whiledeveloping it. But, it doesn’t share any files with theoriginal version of UNIX. It gained a lot of interest and support asit’s an open source i.e. freely available to the public.

It’s majorly used for computer softwareand hardware, tablet PCs, Mainframes, game development and so on. There are more than 10 Linux based mobileoperating 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 characteristicsor 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’sharder to infect as the source is not available.

Unix has generally closed source mode, buta few unix projects are open source as well such as BSD (Berkley Software Distribution)OS and illumos OS Characteristics of Linux Operating SystemIt supports multitasking that means at a time user can open multiple terminals on a desktopwith windows and can work on them simultaneously. And it also supports multi-user programming. In Linux, Programs consist of one or moreprocesses, and each process has one or more threads. Linux is derived from UNIX but does not useits code. It can also easily co-exists along with otherOperating 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 developedby Linus and the GNU foundation Usage: UNIX can be used in workstations, internetservers, and PCs. Whereas, Linux OS can be installed on variousthings like tablet computers, smartphones, servers, mainframes, supercomputers and soon. Users: Unix was developed mainly for workstationsservers,and mainframes, etc. apart from OSX, Which is designed for everyone. But, Linux can be used by almost everyonei.e. developers to home users and computer enthusiasts as wellProcessor: Unix OS is available on PA-RISC and Itanium machines supporting processorslike, Sparc, Power, x86/x64, Itanium, PA-RISC, PowerPC, and a lot more. But, Linux was initially developed for Intel’sx86 hardware processors.

It is available for more than twenty different types of CPU whichalso includes an ARM. Viruses: In Unix, there are around 70 to 110viruses has been posted till date. Whereas, in Linux about 50-90 viruses detectedup till today that are successfully removed now. Detection of Threat: Unix users need longerwait time, to get proper bug fixing patch. Whereas, In Linux, threat detection and solutionis very fast as it’s community driven.

So, suppose if any Linux user shows any kindof threat, qualified developers team starts working to resolve that particular threat. Supported file system: In Unix, the filesystemssupported by file types are like hfx, GPS, xfs, zfs, etc. But, In Linux, the filesystems supported byfile types are like devpts, NTFS,xfs,nfs, cramfsm and so on.

Versions: Unix systems have various versionslike: HP-UX, BSD, AIS etc. Whereas, Linux has different versions likeUbuntu,Redhat,Solaris, OpenSuse and so on. Portability: Unix is not portable.But, Linuxis portable and is booted from a USB Stick. Interface:UNIX originally uses Bourne shell. And this is also compatible with Korn, C andother graphical user interfaces(GUIs). Whereas, In Linux, default interface is BASH(BourneAgain SHell).

But also support multiple command interpretersGUI(Graphical User Interface):Linux is command based but some computer software distributionpackages 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 havedifferent cost structures as per their respective vendors. But, Linux is freely distributed, downloadedthrough website. There are paid versions as well.

But, there’s very little difference betweenthe paid and unpaid versions apart from the support contract. Source code: Unix was developed by variousvendors like HP, IBM, Solaris, Intel, etc. for their business requirements. So, they won’t distribute the source codeto the public. However, there are a few UNIX source codeswhich are open-source, like NetBSD, OpenBSD, and FreeBSD. Whereas, Linux has been developed and thesource code has been distributed or made public under GNU licenseLimitations of UNIX: Unix Operating System is generally designedfor slow computer system, Hence, fast performance can’t be expected. Unix system’s versions on different machines,slightlydiffer, so it lacks consistency.

It has a rigid environment of the hardware. Hence, it cannot be installed on every othermachine. In this, shell interface can be unsafe sometimes,because typing mistake can destroy files. User interface is unfriendly, abrupt and inconsistentin this. Most of the source code of Unix is not availablefor the general public. Limitations of Linux:Standard edition of Linux are not available. Linux is, for new users at least, not as easyto use as Windows. Most of the programs that are used for Windowswill only run on Linux with the help of a complicated emulator.

Ex: Microsoft Office. Linux has patchier support for drivers whichmay result in misfunctioning of the entire system. SummaryThe major difference between Linux and Unix basedoperating systems is not in the presentation part, but at the kernel part i.e. how exactlythey work internally. So, in other words you can also say that themajor differences between them depend upon which exact versions of Linux and Unix youare comparing. The main reason behind the popularity of Linuxis that it’s an open source or freely available.

Whereas, UNIX Operating Systems are not. So, cost is always a major factor while choosingthe technology one over the other. And Linux definitely has an edge regardingthis. Linux OS is more flexible and free to modifyas compared to Unix systems and this is where Linux has more user base and popularity. But, if we discuss about the commands in Unixand Linux, they are not exactly the same but are very much similar. Technical giants like HP, Intel, Solaris usesUnix 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 lookingat the Linux growth rate that any other OS is left far behind when it comes to the currentmarket trend. And there is a high possibility that in thefuture, 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 Post was helpful to you.

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