How to find identical rows in a table and store their number in a separate column?

Question

linux

Hi I have the following table:

gene  5   5  5
gene  4   4  3
gene  5   5  5
gene  1   4  5

I would like to get something like this:

gene  5   5  5   2
gene  4   4  3   1
gene  1   4  5   1

accordingly, a separate column displays the number of rows encountered with the same data, in this case there are two rows in the table gene 5 5 5and the rest one by one.
Can this be done with R, for example?
Thank you!

Answer 1

Plain text table? The uniq utility will help you.