Wednesday 2 May 2018

Comparison of Windows and Linux.



Following are some comparisons and differences between Windows and Linux Operating System.


Windows
Linux
Windows is a proprietary Operating system. It is relating to an owner or ownership.
Linux is a non- proprietary Operating system. It is not registered or protected as a trademark or brand name.
Windows is a costly operating system.
Linux is an economical operating system that anyone can download it freely without license.
Windows has a poor documentation.
Linux has a strong documentation that you can easily find sources/solutions like here on our blog.
Windows is non-case sensitive operating system.
Linux is a case sensitive operating system.
Windows is single user operating system. Windows has been multiuser operating system after Windows XP.
Linux all operating systems are multiuser operating systems.
Windows supports FAT, FAT32 and NTFS file systems.
Linux supports Ext2, Ext3, and Ext4, XFS, JFS, ReiserFS, VFAT and btrfs file systems.
From windows we can’t access Ext2, Ext3, Ext4 or JFS file systems.
From Linux we can access FAT or NTFS file systems.
In windows operating system we use extensions.
In Linux there is no concept of extensions.
In Windows it can be install on Intel like processor power PC processor.
Linux can be installed on almost all type of processor like Intel, Motorola, AMD, Power PC, SPARC etc.
Windows is based on client server technology.
There is no concept of client server in Linux.
Windows is a resource hungry operating system.
Linux is not resource hungry operating system.


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Monday 30 April 2018

Features of Linux.

Following are the main features of Linux.

  1. Open Source.
  2. Multi-tasking.
  3. Multi-user.
  4. Portable.
  5. Security.
  6. Reliable.
  7. Low Purchase Cost (Free).
  8. Scalability (Extendable).
  9. Vendor Support (24/7 Support).
  10. Reliable Uptime.


1. Open Source - Linux Source Code is freely available and it is community based development project. Multiple teams works in collaboration to enhance the capability of Linux Operating System and it continuous evolving. 

2. Multi-tasking - Linux is a multitasking Operating System, and is allowing user to perform more than one task at a time. The Linux is able to keep track of where you are in these tasks and go from one to other without losing information.

3. Multi-user - Linux can handle the multiuser. Means multiuser can access system resources like Memory, RAM, Application programs at same time.


4. Portable - Portability means softwares can works on different types of hardwares in same way. Linux Kernel and application programs supports their installation on any kind of hardware platform.

5. Security - Linux is a secure Operating System. Linux provides user security using some authentication features like password protection, controlled access to specific files and encryption of data. Linux is less prone to virus attack.

6. Reliable - Linux is reliable Operating System. Linux consistently performs according to its specification. Linux is a very light OS. Do not require any special high end hardware. 

7. Low Purchase Cost (Free) - Linux is a free Operating System. Means you don’t have to pay anything to get a decent operating system that is safer than windows. Most distributions are entirely free and open source. You can download and install GNU/Linux distributions without purchase. Some companies offers paid support for their Linux distributions.

8. Scalability (Extendable) - Scalability is a capability of a system, network or process to handle a growing amount of work.

9. Vendor Support (24/7 Support) - There is a massive amount of online support available for Linux, including here on our Linux blog.

10. Reliable Uptime - Linux is notoriously reliable and secure. It has a strong focus on process management, system security and uptime.



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Thursday 26 April 2018

History of Linux


     It all started in 1965 with MULTICS (Multiplexed Information and Computing System) in Cambridge, Massachusetts. MULTICS is an early and influential time sharing Operating System, based on single level memory concept.

       First UNIX system was created in 1973 by Dennis Ritchie (who used 80% of C language) and Ken Thompson (who used 20% Assembly Language). In 1979 Dennis Ritchie created his own version.

        UNIX (initially called as UNICS – Uniplexed Information and Computing System) was created in 1973 at the Bell Labs Research Center by Ken Thompson and Dennis Ritchie and it was for commercial use. Followed by UNIX other companies like Sun, HP, and IBM created their own versions.

SUN
Sun Solaris.
HP
HP-UX (Hewlett Packard).
IBM
AIX (International Business Machine).
SCD
SCO-UNIX (Santacruze).
BSD
Free BSD (Berkeley Software Distribution).
SG
IRIX.


            There is a version of UNIX is called as MINIX (MINI + UNIX = MINIX) which is created by Andrew S. Tanenbaum. Using C program he created 12000 lines code. Buying MINIX by Linus Benedict Torvalds who was the student of second year computer science, studied in University of Helsinki. He created Kernel (source code) and sent to people by email through “123people.com” which is a social networking site like “facebook.com”.

Free Software Foundation (FSF).
           The Free Software Foundation (FSF) is a non-profit organization founded by Richard Stallman in 1985 who supporting free software development. Under FSF he created GNU (not a Linux). GNU is an operating system. GNU is made of wholly free software and licensed under the GNU projects GPL. Richard Stallman created Tools, Software, Applications, and Utilities.

                Both Linus Torvalds and Richard Stallman comes together and created an operating system called as Linux OS (Free – Free means Freedom). And this Linux which is able to modify and edit. Using Linux source codes Red Hat created the new modified OS.

Red Hat Versions
Red Hat 1, Red Hat 2, Red Hat 3, Red Hat 4, Red Hat 5, Red Hat 6, Red Hat 7, Red Hat 8, Red Hat 9.

Then Red Hat created its commercial versions.
Red Hat 1, Red Hat 2, Red Hat 3, Red Hat 4, Red Hat 5, Red Hat 6.

Fedora Core Version 1 to 27 (and 28 is beta version) are the free versions of Red Hat.


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Friday 20 April 2018

What is Linux?


                Linux is a Unix-like Free Open Source Software and community-developed operating system for computers. It is supported on almost every major computer platform including x86(32 bit), x64(64 bit) ARM(Advanced RISC Machines) and SPARC(Scalable Processor Architecture), making it one of the most widely supported operating systems. You can download a free copy of Linux and install it on your own computer. No password is required for access, and no registration is required after downloading. You can use it at home, at school, in your business. You can install it as many times on as many computers as you like, and you can legally make copies of it and give them to friends and colleagues (or even sell copies if you wish).


                Linux powers the servers that deliver Google search results to you and most other web sites also. It is also the core of the Android system that powers the latest smart phones and tablets. Linux is capable of powering giant servers, standard desktop computers, handheld devices, and tiny embedded systems.



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