liblockfile-simple-perl 0.208-1 (armhf binary) in ubuntu groovy

 The LockFile::Simple extension provides simple file locking, of
 the advisory kind, i.e. it requires cooperation between applications
 wishing to lock the same files.
 .
 It is meant to be used in quick-and-dirty scripts or more elaborated
 programs that want a simple locking scheme, yet with a reasonable
 level of configuration.