The search automatically searches file contents and looks to be limited to the directory you're in by default. So, just enter your query in the upper right of the explorer window. You can type ...

Jack Wallen shows you how to use the search feature to more efficiently locate the configuration option you need to edit in the nano text editor.

Summary Smart Search in Google's Files app enhances search results by scanning the content of files, including text in PDFs and images.

Select-String is a cmdlet that is used to search text & the patterns in input strings & files. It is similar to grep on Linux & FINDSTR on Windows 11/10.

The search string is what you need to alter. You want to replace SEARCH_FOR with the text you're searching for and REPLACE_WITH with the text you want to use as a replacement.