i would definitely go for the 'traditional' unix method of creating a lock file somewhere local and then installing an exit handler to delete the lockfile before death.

in pseudo-perl, this would be: 

if ( lockfile_exists() )
{
    warn script_is_locked();
    exit 1;
}

$SIG{'__DIE__'} = \&remove_lockfile();

lock_file();

do_stuff();

remove_lockfile();

exit;

[download]

just be sure to install your signal handler(s) after you test for file locking... race conditions really suck.

dirty...

In reply to Re: Locking a script by d_i_r_t_y
in thread Locking a script by Anonymous Monk

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