output redirection to existing file question


 
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Old 11-13-2011
output redirection to existing file question

So I have a existing file that I used the uniq command on and I need to save the output to the same file without changing the file name.

I have tried $ uniq filename > filename

then when I cat the file it then becomes blank like there is nothing inside.

any help would be much appreciated thanks.

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Last edited by pludi; 11-13-2011 at 02:35 PM..
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