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Re: rpm check script problem



At 12:12 AM +0800 10/10/06, ???? wrote:
>2006/10/9, Tony Nelson <tonynelson georgeanelson com>:
>> At 11:46 PM +0800 10/9/06, ???? wrote:
>>
>> >2006/10/9, Dan Track <dan track gmail com>:
>> >> Hi
>> >>
>> >> I've got a script that should check which rpms are installed on the
>> >> system. Part of the script involves using file descriptors. I'm having
>> >> trouble understanding these file descriptors and was hoping someone
>> >> can clarify my mistake. As a simple script I wrote the following:
>> >>
>> >> #!/bin/bash
>> >> $filename=$1
>> >> $filename1=$2
>> >>
>> >> exec 9<&0 < $filename
>>
>> >The line in the script "exec 9<&0 <$filename" means "first copy fd0 to
>> >fd9, then redirect file to fd0", so in the following lines of the
>> >script fd9 is always the stdin.
>>
>> According to the Wikipedia link
>>
>>     exec 9<$filename
>>
>> seems more likely.

>"exec 9<$filename"  means "redirect file to fd9, without dealing with fd0".

Yes.  Your point is?
-- 
____________________________________________________________________
TonyN.:'    The Great Writ     <mailto:tonynelson georgeanelson com>
      '      is no more.             <http://www.georgeanelson.com/>


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