Irregular "tú" Commands

The following eight verbs have irregular familiar commands in the affirmative:

decir
di
salir
sal
hacer
haz
ser
ir
ve
tener
ten
poner
pon
venir
ven

Note that these irregularities only occur with affirmative tú commands. As with all other verbs, to form negative informal commands with these verbs, use the “tú” form of the present subjunctive.

Di la verdad. (Tell the truth.)
No digas mentiras. (Don’t tell lies.)

Haz tu tarea. (Do your homework.)
No hagas eso. (Don’t do that.)