Is executed by the shell, then passed to the kernel, which is typically slower than a compiled binary program that is pure machine code.

由shell执行，然后传递给内核，这个过程通常比编译为纯机器码的二进制程序慢。

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Since a procedure is a basic unit of most analysis algorithms, a virus writer can defeat static analysis by making it harder to identify a procedure unit in binary program.

由于过程是大多数分析算法的基本单位，所以病毒作者会设法使得识别二进制程序中的过程更加困难从而挫败静态分析。

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The bash shell contains two types of commands: builtins, which are internal, and external programs (or external filters and commands), which are typically self-contained binary program files.

bash shell包含两类命令：内部的内置命令和外部程序(或外部筛选器和命令，它们通常是自含的二进制程序文件)。

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