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Unix is a multitasking and multiuser operating system which runs on different hardware platforms. Its multitasking and multiuser features allow it to perform multiple tasks at the same time for multiple user. The different number of users might have different privileges and different types of access to various resources of the system which ensures data integrity. Another remarkable feature of Unix is virtual memory which means it could use more memory than what is physically installed. That allows large program to run on small systems.


Brief History


Unix was developed by a group of Bell AT&T employees in late 1960s. Original coding was done in assembly language. In early 1970s the entire Unix code was rewritten in C language Wholesale Rams Jerseys ,which made further development much easier and made the operating system portable to different types of hardware. Unix was first commercially installed at System Development Center of New York Telephone Exchange in 1972. Later on, versions 4,5 and 6 of Unix were released in 1975. In 1980s TCPIP protocol was added to Unix kernel. During this time, Microsoft designed and developed it’s own version of Unix, which was known as Xenix. Xenix was used in 16 bit microcomputers. In 1995, Novell bought the rights to Unix and developed it’s version, called UnixWare Cheap Los Angeles Rams Jerseys , which was the result of merging Novell’s own operating system Netware into Unix. Novell provided a strong network support for UnixWare.


Basic features


Unix has many characteristics which were unique at the time of it’s inception. Plain text is used for storing data. File system is hierarchical. Some inter process communication types and devices are treated as files. Large number of software programs could be grouped together by command line interpreter which uses pipes. The entire Unix operating system comprises huge number of software utilities and a master control software which is known as Kernel. Kernel performs various control tasks, such as starting and stopping programs,managing the file system,allocating resources to multiple programs,etc. Kernel issues could be problematic sometimes, which could be resolved through the assistance of a Computer support provider.


Unix Structure


Unix system consists of several software programs which are grouped together. Apart from Kernel, it comprises libraries Cheap Rams Jerseys ,development environment, documents,etc. Despite inclusion of all components, the size of the entire package is quite small. The version 7 of Unix does not occupy more than 10MB memory. Each component of Unix comprises sub components. Kernel part contains boot software,configuration code,device drivers for hardware control,memory management software John Kelly Rams Jersey ,scheduler,header files,etc. The development environment comes with compiler for converting high level language into machine code, assembler for converting assembly code into machine code, linker for combining object files,libraries, build manager John Franklin-Myers Rams Jersey ,header files and other relevant tools. Usage of different Unix tools could be made easier with the help of a network support provider.


Unix Commands


Unix command syntax is same in most of the cases. In the syntax, command is followed by option, which again is followed by arguments. Command is the action which is to be executed. Options are various flags,which are preceded by a minus sign. Arguments specifies the particular action, which the command has to perform. It is not mandatory to provide options and arguments to each command, because most of the commands have a default set of arguments and options. If the user faces any problem is executing Unix commands,an experienced PC support provider should be consulted.


Network Support For Unix


Since Unix is user configurable Brian Allen Rams Jersey , the configuration should be done very carefully under the guidance of Computer support provider. Many network support providers offer round the clock PC support for Unix issues.


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