On Wednesday 10 June 2009 08:06:41 Denys Vlasenko wrote:
> My current knowledge about [[ ]] is:

`man bash` has a section on [[ expression ]]

> // Basically, word splitting and pathname expansion should NOT be performed

path expansions are not done, but some related ones (like tilde and such) are 
still done

> // Additional operators:
> // || and && should work as -o and -a

it also allows for combining of expressions via (...), and it supports 
negation with "!"
-mike

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