[oak perl] RE: perl one liners

[Aimal Pashtoonmal]

Dear Oakland,

I visited your site on one-line perl as trying to use one liner perl to
subtract numbers in two columns, are yo able to help me please?

Hear is what a typical file looks like:

a12345.1   32323jkjkjk32k3j2j3    56565    dfdfdfdfdfd    10   20
454545
b67891.1   54545k4l5k4lkl445     78787    ghghghghgh    15   30  667676

I am trying to subtract column 5 from column 6 and then to print the
results in a new colum next to column 6 so that:

a12345.1   32323jkjkjk32k3j2j3    56565    dfdfdfdfdfd    10   20
10      454545
b67891.1   54545k4l5k4lkl445     78787    ghghghghgh    15   30
15      667676

or even pass them into a new fil without the last column.

Kindest regards, amal.