On Linux or UNIX operating system enter the following command

在Linux或 UNIX操作 系统上，输入以下 命令

According to the structure of UNIX / XENIX System we first analyse the kinds of Shell and introduce Shell command Shell programming language and the working process of Shell .

根据 UNIX/XENIX 系统的结构，首先分析Shell的种类，介绍Shell 命令、Shell程序设计语言及Shell的工作过程。

To boost productivity drop to Cygwin and use its UNIX-like command line to manipulate the system .

使用Cygwin和它的 UNIX 命令行来操纵 系统可以大大提高生产力。

Command history records generated by Unix shell is one of the important sources of system auditing information . But command history does not include sufficient information for intrusion detection and the history records can be easily modified by user themselves .

UNIXSHELL生成的 命令历史记录是 系统审计信息的重要来源，但它未能包含检测入侵所需的足够信息，且容易被用户本人篡改。

To find the shells available on your UNIX system use the command cat / etc / shells .

要了解您的 UNIX 系统中可用的Shell，可以使用cat/etc/shells 命令。