Useful command in DOS for searching within a directory : findstr /spin /d:\dir1\dir2\ “searchstring” Note: Flags: /s   : Searches for matching files in the current directory and all subdirectories. /p   : Skips files with non-printable characters /i   : Specifies that the search is not to be case-sensitive. /n   : Prints the line number before each line that matches.