Hi,
I am looking for a sed/awk script to join two large (~300 M) single column files (one is sorted and the other is not sorted) side-by-side. I have a shell script but its taking ages to do the task so looking for an optimized fast solution.
The two files look like:
File1 (sorted)
a1
a2
a3
a4
File2 (unsorted)
b1
b2
b3
b4
Desired output:
a1 b1
a2 b2
a3 b3
a4 b4
PS: the two input file are massive.
Cheers,