I had a file that was of this form 

aaa bbb ccc hhh
aaa hhh
nnn vvv hhh
vvv aaa eee aaa hhh
Where each one of those spaces is a tab. I required the last column of each row. That is, I needed each field where "hhh" exists. And this was solved with the following code!

 $ cat tabDelimitedFile.txt | awk -F\\t '{print $NF}'