John D. Cook • 6/28/2026

Brace expansion tree

This article breaks down a complex bash one-liner that uses nested brace expansions to print 30 English words like 'when', 'where', 'then', 'there', and 'hence'. It explains the mechanics of brace expansion, including comma-separated alternatives, cartesian products, and depth-first traversal of the expansion tree. The content is a technical tutorial focused on a bash shell feature, relevant to IT/TECHNOLOGY topics such as shell scripting, command-line tools, and programming concepts.

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#bash #Shell Scripting #Brace Expansion