Comparing the contents of a text file against another

by Feb 25, 2015

I have two text files.  One text file has a list of strings (over three hundred) divided into separate lines.  I need to see if the strings in this text file exist in another file. 

I've used select-string before to look for patterns, but these have been one off patterns.  I've never used select-string for an entire file.

I think the correct format is to load the file using gci and then iterate through it using select-string and then compare this against the file that I need to examine, but I'm having no luck.

Any pointers to get started would be greatly appreciated.