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Definition: scsh: A `scheme' interpreter designed for writing system programs. Scsh has a high-level process notation for doing shell-script like tasks: running programs, establishing pipelines and I/O redirection. Scsh embeds this process notation within a full Scheme implementation. The process notation is realized as a set of macro definitions, and is carefully designed to allow full integration with standard Scheme code. Scsh isn't Scheme-like; it is Scheme. At the scripting level, scsh also has an Awk design, also implemented as a macro that can be embedded inside general Scheme code. Scsh additionally provides the low-level access to the operating system normally associated with C. The current release provides full access to POSIX, plus important non-POSIX extensions, such as complete sockets support. "Complete POSIX" means: fork, exec & wait, sockets, full read, write, open & close, seek & tell, complete file-system access, including stat, chmod/chgrp/chown, symlink, FIFO & directory access, tty & pty support, file locking, pipes, select, file-name pattern-matching, time & date, environment variables, signal handlers, and more. Please be aware that several of the other scheme implementations being distributed as Debian GNU/Linux packages also provide much of the similar system programming functionality. It is wisest to try them all and explore. From Debian 3.0r0 APT

* Linux/Unix/Computing Glossary

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