How do I find files not containing some text on Linux? Basically I'm looking for the inverse of the following
find . -print | xargs grep -iL "somestring"
The command you quote, ironically enough does exactly what you describe. Test it!
echo "hello" > a
echo "bye" > b
grep -iL BYE a b
Says a only.
I think you may be confusing -L and -l
find . -print | xargs grep -iL "somestring"
is the inverse of
find . -print | xargs grep -il "somestring"
By the way, consider
find . -print0 | xargs -0 grep -iL "somestring"
Or even
grep -IRiL "somestring" .