/giveall

[danechek]

Add these commands, please:
/giveall - give item to all players
/giveall hand - give copy of item from your hand to all players

[Pheotis]

It is currently possible to give all online players an item with /give * <itemname>.
give * can be assigned the alias giveall.

It also possible to get the name of what is in your hand with /itemdb.
As possible tweak to that cmd, perhaps the returned Item: string could be made copyable?

[danechek]

Under the "item from hand" I meant: For example, I gave myself a custom potion with certain parameters or effects and then issued it to all players. Or via /give * can also be any item with any parameters to give everyone at once?

[Pheotis]

It is possible to /give * everyone an item, complete with parameters; for more information, see this page.

For example:
/give * potion 1 name:&d&lCustom_Potion lore:&7Fancy,_eh? effect:luck power:5 duration:86400

That said, item meta is not reflected by the /itemdb command... so that could probably be tweaked as well.