I've got two columns of data I need to sort: the first column(A) needs to be sorted lexicographically and for any rows which then contain the same column A string, I need them to be sorted numerically according to what's in the second column(B). 

I was thinking `'sort -f'` , but that would make a '12' in column B come before a '2'. 

Edit: Accidentally typed column in place of row.