That example has not likely existed for many year. You can use src/ts/examples/tutorials/ex1.c as a starting point.
> On Feb 6, 2018, at 3:31 PM, Mohammad Hassan Baghaei > <mhbagh...@mail.sjtu.edu.cn> wrote: > > Hi > I wanted to use my solve the system of equation using pseudo-transient > continuation. I found that we can refer to this version for driven cavity > example. However, I could not find it within files > (src/snes/examples/tutorials/ex27.c). Would it be possible for > you to share this file? > Thanks > Amir