Script to check files?

Question

Data Comparison

Help me, I need a script to scan two files line by line (namely, line by line, the first line from 1 file was compared with all the lines in the second, etc.) the files are in the array and the first file is on the Yandex disk and the second on the PC and the first file is not willing to download, so hunting so that the script reads the file from Yandex disk immediately help is very necessary and write the same values ​​\u200b\u200bin a separate file