Unix Comparison Matrix - 830 Words

Components BSD System V GNU Role of shell Main access to the UNIX operating system and as such any improvement to it can result in considerably more effective use of the system, increased speed, efficiency and file properties. â€Å"C† Shell This shell is good for interactive work and also added some features from other Operating shells. The Korn shell became part of System V but had one major problem; unlike the rest of the UNIX shells it wasnt free, you had to pay ATT for it. Bourne Shell It has a very strong powerful syntactical language built into it, with all the features that are commonly considered to produce structured programs; it has particularly strong provisions for controlling input and output and in its expression†¦show more content†¦Comments on performance As the hardware basis for such capabilities, an interactive graphics computer station--SaberStation for short--equips the application programmer with more than enough processing power for the job. Based on a National Semiconductor 32-bit chip set and running at 10 MHz under the BSD Unix operating system, the unit puts the performance of a VAX-like minicomputer on an engineers desk. Its architecture, which employs a floating-point coprocessor and ultrafast, 32-bit-wide DMA channels, executes 1.2 million instructions a second. Comments on programmability Programs in this system can often, even typically, be written in a single line of code. Inexperienced users can be taught to write simple programs in a matter of minutes. Beginners often produce simple programs without effort within their first day using it. The elements of the Unix environment have been called software tools. A software tool is very much like a component, but a bit different. Throughout this piece, well refer to components as tools, but remember that you can almost always substitute component for tool. In Unix, the standard shell utilities are all tools. So is the shell. A tool takes a standard data format -- lines of textual input -- and produces output in the same format. No special code is needed to handle data types; everyone agrees on a simple format and does a small amount of translation.Show MoreRelatedA Comparative Analysis of Database Software Programs1257 Words   |  5 Pagesenvironments including operating systems, and extent of support for transaction processing. Additionally the ability of a database to support localization through Unicode is also included in the comparison. Each of these factors is briefly described below and included in a comparison table. 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