From WikiGTA - The Complete Grand Theft Auto Walkthrough
|GTA's & Locations|
GTA San Andreas (Location)
Liberty City Stories (Location)
Vice City Stories (Location)
GTA IV (Location)
The knife is a small weapon which you can use to stab your opponents. The knife is not as effective as the bigger machete, but you can slit some ones throat from behind without making any noise in GTA San Andreas.