常用Unix Shell环境比较

Comparison of Common Unix Shells

Shell是各类Unix操作系统与外部最主要的接口,是用户与操作系统之间交互的工具,不同Unix操作系统下缺省使用的Shell各不相同,用户在使用不同计算机时因为Shell的不同产生了许多困扰。文章简述了几种主要的Shell及其历史,介绍了如何选择Shell,比较了常用Unix Shell的异同及不同Shell登录时的初始化过程,最后详细介绍了AIX(Advanced Interactive eXecutive)系统中Korn Shell的启动、初始化文件和一个控制用户登陆的Shell应用实例。

The default shell is different in different Unix operating systems. The difference of the shells may puzzle users who use different types of computers. The main shells and their histories are introduced. The way to select a shell, the difference, the similarities and the login initialization process of the Unix Shells in common use are introduced. The starting and the initialization files of AIX （Advanced Interactive eXecutive） are described particularly. An example of controlling user＇s logins is given.