I have a big text file (2 GB) with 4 columns looking like this:
C START END A
1 10583 10583 0.14
1 10611 10611 0.02
1 13302 13302 0.11
I also have another file where I have extracted a string of information and if this string matches col1:col2:col3 then I want to extract "A", ie col4. The file above is so big and I don't know how to go through in a faster way then just opening it and reading it.