Tony Finch
dot@dotat.at
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https://dotat.at/:/JBDC9.html
2013-08-21T23:40:01Z
The algebra of Unix shell history substitution.
2013‑08‑21
The algebra of Unix shell history substitution.
http://bosker.wordpress.com/2013/08/16/using-group-theory-to-understand-unix-command-substitution/
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