help with a bash script please

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Hi all.

I'm having trouble with an if statement in a bash script I'm
writing. What I want to do, is to check if a file doesn't have read
permission. What I'm doing is:

if !([ -r filename])

However, bash says that the command [-r is not found on line
number. Can someone please tell me what I'm doing wrong, and show me
how to do what I want to do properly? Thanks in advance.

Greg


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