I have a text file.
number 1_1 \t number1_2 \t etc number 2_1 \t number2_2 \t etc
I want to remove the first column of this file (corresponding to number1_1, number2_1 etc, ie the numbers before the first tab for each row). I read this post that proposes a solution to delete the first column (see Peter's answer). However, it doesn't work for me as the numbers have different sizes and I cannot repeat the operation to delete the first column. How can I do then?