On Tue, Jul 17, 2007 at 03:42:53PM +0200, frantisek holop wrote:
| i have found a script on hp-ux that uses
| [[ ]] instead of the if [ ]; then construct
| so i went to sh(1), and while [[ is listed
| as a compound command, i couldn't find any
| explanation of what it does and how is it
| different if at all.
| 
| could the doc experts advise please and
| update the docs?

My manpage (ksh(1)) says :

     [[ expression ]]
             Similar to the test and [ ... ] commands (described later), with
             the following exceptions:

And then lists some exceptions. This could be a difference between sh
and ksh (which, I believe, is only a difference in documentation).

Cheers,

Paul 'WEiRD' de Weerd

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