Linux: Search for keywords from a file and display the number of rows (Cat,grep function)

If there is a test1.txt format as shown:

The contents of the Test2.txt are as follows:

Now you need to search for the line containing the keyword Test2.txt and show the number of rows

You can use the command:

Cat Test1.txt | GREP-NF Test2.txt

After running, the effect is as follows:

36840733 and 36909134 indicate the number of rows containing the two keywords.

Linux: Search for keywords from a file and display the number of rows (Cat,grep function)