If you want to search for different text in files or folders, without using any Visual IDE, then Ubuntu provides you a good and easy way to search for the folder or files in Terminal (Gnome Terminal).
How To Search for Files or Folders?
Simply goto the Terminal (gnome-terminal) through:
Applications -> Accessories -> Terminal
and write the following command:
grep -r ‘webtechquery’ *
where webtechquery is the text you want to search in your files.
This will bring the results with the file names, containing all the files which has the text webtechquery.