Chapter 16. The Shell,
and Shell Scripts
Chapter 16. The Shell,
and Shell Scripts
The Korn shell is an interactive command interpreter and command programming language. It conforms to the Portable Operating System Interface for Computer Environments (POSIX), an international standard for operating systems. POSIX is not an operating system, but is a standard aimed at portability of applications, at the source level, across many systems. POSIX features are built on top of the Korn shell. The Korn shell (also known as the POSIX shell) offers many of the same features as the Bourne and C shells, such as I/O redirection capabilities, variable substitution, and file name substitution.
16.2 Bourne Shell