NAME

       pmlock - simple file-based mutex


SYNOPSIS

       $PCP_BINADM_DIR/pmlock [ -v ] file


DESCRIPTION

       pmlock  attempts  to acquire an exclusive lock by creating
       file with a mode of 0.

       The exit status is 0 for success, 1 for failure.

       To release the lock, unlink file.

       In the event of a  failure,  the  -v  option  produces  an
       explanatory message on stdout.


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