How to find patterns across multiple lines using grep?

Question

I want to find files that have \"abc\" AND \"efg\" in that order, and those two strings are on different lines in that file. Eg: a file with content:

blah bl         


        

Answer 1

sed should suffice as poster LJ stated above,

instead of !d you can simply use p to print:

sed -n '/abc/,/efg/p' file