/gamerule: Shows or changes a world rule, like keepInventory or doDaylightCycle.
Syntax
<angle brackets> are required, [square brackets] optional. /gamerule has 4 forms:
/gamerule
/gamerule <rule: playerwaypointsrule> <value: playerwaypointsvalues>
/gamerule <rule: boolgamerule> [value: boolean]
/gamerule <rule: intgamerule> [value: int]