lckdo: invalid option -- '-'

lckdo: execute a program with a lock set. Usage: lckdo [options] lockfile program [arguments] where options are: -w - if the lock is already held by another process, wait for it to complete instead of failing immediately -W sec - the same as -w but wait not more than sec seconds -e - execute the program directly, no fork/wait (keeps extra open file descriptor) -E nnn - set the fd# to keep open in -e case (implies -e) -n - do not create the lock file if it does not exist -q - produce no output if lock is already held -s - lock in shared (read) mode -x - lock in exclusive (write) mode (default) -t - test for lock existence (just prints pid if any with -q) (implies -n)