Drew DeVault • 12/28/2018

Anatomy of a shell

The article details the internal architecture of a POSIX-compliant shell implementation (mrsh), covering its two main components: parsing and execution. It explains the use of a recursive descent parser to generate an Abstract Syntax Tree (AST) and describes how AST nodes are transformed into executable tasks with a defined interface for process management and control flow.

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#parsing #ast #shell