how about all your previous questions ? grep sequence ; Download pfam sequence ; grep things and counting line number in R ; ... etc .... tc... Please accept the answers so the questions are marked solved on the website. To do that, click on the green check mark on the left side of the answer.

Pierre is right. You can use cut with the -d and -f options. I found the following link to be very helpful in learning how to use cut:

Cut Command in Linux