Delete columns from space delimited file where file header matches

Question

I have a space delimited input text file. I would like to delete columns where the column header is size using sed or awk.

Input File:

id quantity colour         


        

Answer 1

Use cut:

$ cut -d' ' -f1-4,6,7,9,10 < in.txt   
id quantity colour shape colour shape colour shape
1 10 blue square red triangle pink circle
2 12 yellow pentagon orange rectangle purple oval