FIND command
In order to run a search for file names containing a specified string enter this script at the command prompt:
dir c:\ /s /b | find "whale"
. . . if you want to search for a string in a specified file and determine the line numbers on which the string appears, run:
find /n "whale" melville.txt
. . . in this example:
. . . you will get the result: [5]a big whale