There are 8 irregular verbs in the Spanish Tú positive command.
If you can remember the following mnemonic, then you can remember these 8 crazy bastards of the tú positive command.
Mnemonic: SAL SAYS HE HAS TAMPONS...DIVE IN !
Translated ( Sal Se Ve Haz Ten Pon... Di Ven !)
Sal (Salir)
Sé (Ser)
Ve (Ir)
Haz (Hacer)
Ten ( Tener)
Pon (Poner)
Di (Decir)
Ven (Venir)