grep for text in *.odt or *.doc files? [duplicate]

How can I search for *.odt or *.doc files that contain certain text in Ubuntu?

I use grep -rl <text to search for>, but this only works for text files.

Note: a solution that uses grep (such as searchmonkey) will not work because the *.doc or *.odt files have a special format.

From How to search for strings inside files in a folder?

• Recoll wants to index my home directory, but I want to search *.odt files in specific directories; I couldn't figure out how to do that with this tool.
• Searchmonkey seems to be a GUI for grep, and as I mentioned, grep doesn't work on *.doc or *.odt files.
• Regexxer also has the same problem.

From Searching through ODT documents without opening them?

• Like Recoll, I couldn't figure out how to search *.odt files in specific directories with this tool.

catdoc appears to work recursively for .doc files in 16.04: https://superuser.com/questions/330242/how-to-recursively-find-a-doc-file-that-contains-a-specific-word

There's no mention of .docx so you'll need to figure that one out yourself.

For .ods or .odt files, you could have the following script courtesy kaibob @ ubuntuforums.org:

#!/bin/bash

find . -type f -name "*.od*" | while read i ; do
   [ "$1" ] || { echo "You forgot search string!" ; exit 1 ; }
   unzip -ca "$i" 2>/dev/null | grep -iq "$*"
   if [ $? -eq 0 ] ; then
      echo "string found in $i" | nl
   fi
done

Let's say you call it "libre-search" and have made it executable.

Then, running libre-search your_string should list files containing your_string.

unzip -ca "$i" 2>/dev/null takes care of unwanted content.
grep -iq makes the search case-insensitive.
nl numbers the output.