Thank you for the reply's, here is knife defense training.
 

*all attacks are assumed they just walked up and stabbed/slashed at you.*
The average martial artist: First, you must understand that 90% of the time you will get cut by the opponents knife. Second you probably won't know there is a knife until you get cut, so I will tell you how to spot knife-type weapons.
on average, you will have the death blow dealt to you by a knife in about 1.5 seconds.
The ninja trained against knife-threats: you will get cut 60 percent of the time after one month of anti-knife training, doing at least three drills a day. After a year of being able to spot the signs of an attacker about to pull a knife and stopping a knife, doing seven drills a week, you have a 20% chance of being cut by an attacker.
In knife defense, moves must be simple, and not use more than 2 motor skills (a krav maga principle for any defense) and that's why "dojo" moves don't work. Most seem perfect on the surface, and some are fine in the sparring ring. But, they are long and complex and there are so many different moves to use at once.

                                     Spotting the knife in a normal situation
A knife can be spotted in a few ways. The simples being looking for a 4-22 inch long, and .5-1 inch thick bulge in a pocket. But, that's impossible in today's world. So, you would look for hand twitches, sweat, moving back and forth eyes, and fist in the pocket of a person near you. Hopefully you have implemented awareness training, if not I think I will put it in the bottom of this page or an upcoming post.

                                   Spotting the knife in a combative situation
In combat, it's all about telegraphing. where are there hands? slowly reaching to a pocket? how about behind their back? They may also have a smile on their face a confident look in their eyes, chances are that looking into them will have them pull out the knife.
If you see any of these tai sabaki backwards and get ready.
                                   Knife defense principles
() distance; either be out of range, or be so close they can't stab you, but only if you have control of the knife
()angles hold your arms out horizantally, at 180 degrees. very weak aren't they? past 170 degrees (0 being your solar plexus) they are weak. 135 is the strongest. A range of 110-145 is quite strong. use estimation to tell the degree. use this to get to that spot on there side for weakness.
() improvised weapons. Everything is a weapon. Throw your phone at the attacker, stab a chair at him feet first. *Practice going into a room and Identifying improvised weapons as much as possible for a month. Then, do it at least once a week, and it will be an instinct*

                                  Rules of knife defense
Up close and dirty rules
Grab
Control
Disarm
Take down
Evasion rules
"L" stepping

Up and Dirty.
Grab
Practice grabbing/catching the hand that holds the knife, from all types of attacks, ice picks, (straight down) stabs, upwards slice's horizontal cuts.
Control
Apply one of the joint locks from earlier in the articles, any type of armbar, or arm lock (a simple one being going over the forearm, and under the bicep, or reverse it i.e. under and over)
Disarm
Note: if done correctly, the joint locks from the kihon happo in an earlier post will either snap a limb or takedown the opponent
Take away the knife by: snap the wrist elbow arm or fingers, orraking the fingers by going under the finger tips.
Takedown
Certain locks can easily be a takedown, but you can kick the inside crook of the knee, or just kick the outside of the knee for a knee break, and so forth.

Evasion
"L" Step
While moving backwards, as the attack comes in, dodge to either side, and do some form of strike, like a punch to the throat, a side kick to the knee joint to snap, or roundhouse kick through the back of the knee for a takedown.