What's the fastest way using lsof to find a single open file?

Question

I\'m trying to test a single file if it is open using lsof. Is there a faster way than this?

$result = exec(\'lsof | grep filename | wc -l\');

if($result &         


        

Answer 1

Use fuser. It returns non-zero if any of the files specified are in use, and zero if they're all available.