What is the shortcut

Support Basics & Interface
1

I am used the keymapping set to blender 2 79b but what is the shortcut for selecting bezier to linear.
In blender 3.6 its right mouse button on the time line but what is it on blender2.79b keymapping.
I forgot it.

2

Solved just used the blender 3.6 keymap.

3

In 2.7x:
Set keyframe interpolation = T

4

Thanks It was so simple I did forget T is for me tools but T in the timeline work great.