I have a vi file containing hundreds of lines with the following format
029.inp.log: SCF Done: E(RHF) = -844.790844670 A.U. after 26 cycles
I want to delete all of the columns (separated by spaces/tabs. got messed up when I pasted it here) other than the first (029.inp.log:) and the fifth (-844.790844670). Can anyone help me?