This script allows to count how many entries are shared between two lists without having to share the lists themselves by hashing the list entries and comparing the hashes only. For each entry, spaces and line breaks around the entry get trimmed away and the string is converted to lower cases, so strings that only differ in casing will be identified as matches. Empty lines are ignored.
Run npm link in this directory to install the scripts.
Run npm unlink in this directory to uninstall the scripts.
Then create a text file where each line is an entry to the list and hash it via
hash-file name-of-your-input-file.txt name-for-the-output-file.txtShare the output file with the person that will do the counting.
If someone gave you a list of hashes to compare, first create your own list that
you want to compare the hashes with. If you have both files, let's call them
hashes.txt and yourOwnList.txt, then you can run
count-hash-hits yourOwnList.txt hashes.txtThe script will give you the number of hits.
The hashes example file was created from the example list by running
hash-file ./examples/list.txt ./examples/hashes.txtin this directory. Running
count-hash-hits ./examples/list.txt ./examples/hashes.txttherefore will give you 2, the number of entries in the list, as all list entries will match.