Say I have this 857835 line file, containing stuff like this:
a1
rubbish1
rubbish2
rubbish3
rubbish4
a1
rubbish5
rubbish6
rubbish7
rubbish8
And I wish to remove all occurences of a1 and the next line (rubbish1 and rubbish5 in this example). How do I do it?
I've tried grep 'a1' -v -A1 to no avail, and my sed skillz are not really great :}
My Google-fu has not been able to help me this time, someone please help!
