grep -f alternative for huge files

Question

grep -F -f file1  file2

file1 is 90 Mb (2.5 million lines, one word per line)

file2 is 45 Gb

That command doesn\'t actually produce a

Answer 1

You can try ack. They are saying that it is faster than grep.

You can try parallel :

parallel --progress -a file1 'grep -F {} file2'

Parallel has got many other useful switches to make computations faster.