Question: How to define 2nd order diff initial condition for solving a differential euqation

For example 

y'''-y''+2y'=0 ; y(0) = 1, y'(0)=0, y''(0) =0
ode := diff(f(x), x, x, x)-(diff(f(x), x, x))+2*(diff(f(x), x))
ics:=D(f(x))(0)=0,f(0)=1,......
the I.C. for y''(0) =0 is ?
Please give the format.
Thanks.
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