I am trying to shorten usernames, one answer I got is string.find, how would I use string.find()?

So I am just trying to figure out how to use it to shorten usernames (I believe it can do that) in like admin commands for example. Any answers?

you can use

if string.sub(message:lower(),1,5) == "/kill" then
  local PlayerSelect = string.sub(message:lower(),7)

for i, v in pairs(game.Players:GetPlayers()) do
if v.Name == PlayerSelect then
v.Character.Humanoid.Health = 0
end
end
end

like that

These two articles will be able to help! they're a bit trickey but if you spend a minute to understand them it's not that bad! :)

Formatting and converting strings

String patterns