File::BasicFlock - file locking with flock

 use File::BasicFlock;

 lock($filename);

 lock($filename, 'shared');

 lock($filename, undef, 'nonblocking');

 lock($filename, 'shared', 'nonblocking');

 unlock($filename);

Lock files using the flock() call. The file to be locked must already exist. This is a very thing interface.

David Muir Sharnoff, <muir@idiom.com>