Unix is a family of multitasking, multi-user computer operating systems that derive from the original AT&T Unix, development starting in the 1970s at the Bell Labs research center by Ken Thompson, Dennis Ritchie, and others.
Initially intended for use inside the Bell System, AT&T licensed Unix to outside parties in the late 1970s, leading to a variety of both academic and commercial Unix variants from vendors like the University of California, Berkeley (BSD), Microsoft (Xenix), IBM (AIX), and Sun Microsystems (Solaris). In the early 1990s, AT&T sold its rights in Unix to Novell, which then sold its Unix business to the Santa Cruz Operation (SCO) in 1995. The UNIX trademark passed to The Open Group, a neutral industry consortium, which allows the use of the mark for certified operating systems that comply with the Single UNIX Specification (SUS). As of 2014, the Unix version with the largest installed base is Apple‘s macOS.
Different flavors of Unix have different cost structures according to vendors
Three bigest distributions are Solaris (Oracle), AIX (IBM) & HP-UX Hewlett Packard. And Apple Makes OSX, an unix based os.
Unix operating systems were developed mainly for mainframes, servers and workstations except OSX, Which is designed for everyone. The Unix environment and the client-server program model were essential elements in the development of the Internet
The UNIX operating system is used in internet servers, workstations & PCs. Backbone of the majority of finance infastructure and many 24×365 high availability solutions.
File System Support (FSS)
jfs, gpfs, hfs, hfs+, ufs, xfs, zfs format
Text User Interface
Originally the Bourne Shell. Now it’s compatible with many others including BASH, Korn & C.
Initially Unix was a command based OS, but later a GUI was created called Common Desktop Environment. Most distributions now ship with Gnome.
some (Solaris, MacOS ) free for development use but support is available not available for free(application).
Security and threat.
A rough estimate of UNIX viruses is between 85 -120 viruses reported till date.
Because of the proprietary nature of the original Unix, users have to wait for a while, to get the proper bug fixing patch. But these are not as common.
x86/x64, Sparc, Power, Itanium, PA-RISC, PowerPC and many others.
osx, Solaris, iOS.
is available on PA-RISC and Itanium machines. Solaris also available for x86/x64 based systems.OSX is PowerPC(10.0-10.5)/x86(10.4)/x64(10.5-10.8).
Inspired by MINIX (a Unix-like system) and eventually after adding many features of GUI, Drivers etc, Linus Torvalds developed the framework of the OS that became LINUX in 1992. The LINUX kernel was released on 17th September, 1991
Linux is an open source, free to use operating system widely used for computer hardware and software, game development, tablet PCS, mainframes etc.
Linux is developed by Open Source development i.e. through sharing and collaboration of code and features through forums etc and it is distributed by various vendors.
Everyone. From home users to developers and computer enthusiasts alike.
Linux can be installed on a wide variety of computer hardware, ranging from mobile phones, tablet computers andvideo game consoles, to mainframes and supercomputers.
File System Support (FSS)
Ext2, Ext3, Ext4, Jfs, ReiserFS, Xfs, Btrfs, FAT, FAT32, NTFS.
Text Mode Interface
BASH (Bourne Again SHell) is the Linux default shell. It can support multiple command interpreters.
Linux typically provides two GUIs,KDE and Gnome. But there are millions of alternatives such as LXDE, Xfce, Unity, Mate, twm, ect.
security and threats
Linux has had about 60-100 viruses listed till date. None of them actively spreading nowadays.
In case of Linux, threat detection and solution is very fast, as Linux is mainly community driven and whenever any Linux user posts any kind of threat, several developers start working on it from different parts of the world
Originally developed for Intel’s x86 hardware, ports available for over two dozen CPU types including ARM