General :: Compare Two File - Information About Software ?

I have many files with info about soft, installed on remote machines.

I need to compare this file with template (soft than must be installed) and output file must content info about software that's not installed.

Code:

Code:

output must be software_name2, becouse it is not installed, but software_name3.2 is good enough becouse version is more than we need.

So, the task is to show lines that is in template and not in source, using simple regular expressions

I use grep

Code:

or

Code:

But it shows me only lines that is in source and not in template etc...