Usage: setexpiration [-f] [-m <time> | -M] [-e <datetime> | -E] [-i | -I] <slice>
Options:
  -f      - Force operation even it makes no sense.
  -m      - Max increment time for a renew. In minutes.
            Use zero to allow anything. Use "null" to clear.
            Use "NN days" or "NN hours" also.
  -M      - Clear max increment time for a renew.
  -e      - Termination date; sliver may not be renewed past this
            date. Use standard date format (YYYY-MM-DD HH:MM:SS)
  -E      - Clear max termination date.
  -i      - Set 'idle ignore'; no idle checks or email.
  -I      - Turn idle checks back on.