Learn how to use flex and bison to process text data in Linux or Unix with the updated edition of this classic book. Whether you re interpreting code, configuration files, or any other structured format, flex & bison explains how these flexible utili

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linux环境下，实现的shell解释器，实现功能主要有： 1. 基本界面由输入提示符开头 2. 执行可执行文件包括参数 3. 错误提示 4. 内置简单shell 命令 cd exit 5. 单次I/O 重定向 > < 6. 单次管道 | 7. 后台运行 & 8. 顺序执行多个命令 ；-linux environment, to achieve the shell interpreter to realize functions are: 1