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function grammar


From: Linda Walsh
Subject: function grammar
Date: Sun, 18 Jul 2010 11:53:02 -0700
User-agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.8.1.24) Gecko/20100228 Lightning/0.9 Thunderbird/2.0.0.24 Mnenhy/0.7.6.666



from man bash, to define a function use;

"function" "name" <compound-command>
 OR
"name" () <compound-command>

right?

And Compound Commands are:

 ( <list>)
  { <list>; )
 (( expression ))
 [[ expression ]]
...et al....

so why do I get a syntax error for

function good_dir [[ -n $1 && -d $1 && -r $1  && -x $1 ]]

bash: syntax error near unexpected token `[['





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