Essay - Unix Batch Scripting Scripting in Unix Can Be Used for...

Unix Batch Scripting

Scripting in Unix can be used for batch jobs. The purpose of this approach is to create a reliable repetition of a single task ranging from analysis ***** real data, processing or re***** of raw data to final quality data and reconstruction.

***** files are a familiar term for those who have used MS DOS in its most basic form ***** ***** have background knowledge of the Windows operating system. While working in the DOS environment, it is likely that the one might come across batch files at some point. In ***** context of an MS ***** environment, a b*****tch file is simply a text *****, which contains a list of commands to be executed in sequence. Although, in the batch ***** created in a DOS environment, a simple level of interactivity exists but they ***** not capable of offering a rich environment similar to that of a dedicated program that a language like ***** can provide.

***** the Unix environment, a similar type of scripting can be done by means ***** shell scripts. Shell scripts developed in Unix are also simply text files containing lists of standard ***** commands, which are to be executed by the ***** *****elf. However, ***** is ***** only *****ity between DOS batch files and Unix shell scripts ends because scripting in Unix is consider ***** be richer and signifi*****tly powerful as compared to MS ***** batch *****. Shell scripts are capable of tak*****g the inputs from the user in a more efficient manner ***** compared to the DOS batch files.

***** of the programmers learn scripting through ***** DOS *****. Interestingly ***** of them come up with some reasonably powerful ***** written through DOS batch file language, though it requires extensive efforts. However, in most of the cases a need arises to convert these DOS ***** files to a UNIX shell script. This process is not very complic*****ted because most of the operators ***** in DOS batch files are a subset of the equivalent shell script*****g variables.

Unix ***** can also be referred as a command language interpreter as its primary function is to translate command lines typed at a terminal into system actions. The shell script itself acts ***** a program, which is used to call upon o*****r programs. Among the wide range of UNIX shells, the C shell (csh), the Bourne shell and the Korn shell ***** the most popular ones and are ***** frequently *****. The ***** ********** ***** generally written in C shell or Bourne Shell. It is recommended by NERSC that only C ***** or Bourne shell should be used for batch scripting.

Unix batch scripting is now comm***** used in developing facet systems. Batch control systems are gaining increased importance hence securing an import*****t position in the information technology architecture of today's industry. Batch ***** systems ***** ***** capable of getting linked ***** enterprise resource planning systems. In addition to this, these ***** can also ***** some information ***** facilities of their own. Businesses today