Programming :: Bash - Syntax For ((<arithmetic Expression>)) Usage ?

Mar 18, 2010

I do not understand bash' syntax regarding the use of ((<arithmetic expression>)). $((<arithmetic expression>)) is tokenised to a single word. OK.

Code:

In isolation

Code:

It may not be used where a word is expected. This generates a syntax error. Why?

Code:

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#output is
12
67

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Code:

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[Code]...

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Code:
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May 7, 2011

I've spent most of the evening browsing the web, trying many things I've found on various forums, but nothing seems to work.

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