对UNIX系统中B-shell的功能扩展

The Expansion of B-shell's Function in UNIX

UNIX系统是当代著名的操作系统之一,B-shell是UNIX系统不同版本的shell中最重要的一种。针对B-shell作为独立程序设计语言与一般高级程序设计语言相比所存在的一些缺欠,如B-shell不提供集成数据类型、没有格式化输出手段、计算能力不强和串处理能力较弱等,将对B-shell在计算能力、字符串处理、集成数据类型和格式化输出等方面进行功能扩充,可大大提高编程的效率,并使B-shell具有与其它高级语言类似的功能。论文的结果有助于相关软件的开发和应用。

UNIX is one of the best computer operating systems.In UNIX,B-shell is the most important shell,but it has some shortcomings compared with general programming language.For example,it has no integrated data type,no formatted input-output ways,weak ability to calculate and weak to deal with character string.In this paper the B-shell functions of calculating ability,dealing with character string,integrated data type and formatted input-output ways are extended.That will make B-shell have the functions similar to those of other high-level programming language.The result of this paper is important to exploiture and application of relative software.