Purpose
With no arguments, show the position of the LRIS trapdoor.
With argument "open", open the trapdoor.
With argument "close", close the trapdoor.
Usage
trapdoor [open,close]
Arguments
desired state of the trapdoor
Output
Status of the trapdoor is printed to stdout
Exit values
0 = normal completion
1 = wrong number of arguments
Example
1) Close the trapdoor
trapdoor close