What is the practical difference between the following two commands?
Command A
find . -type f -print0 | xargs -0 grep -r masi
Command B
find . -type f -print0 | xargs -0 grep masi
In short, what is the practical benefit of Command A?
None .. -r is for recursively searching directories, but the -type f will prevent find from returning directory names.
I think none The A will try to recurse over file names (as the find is only searching for files) so it will not recurse into anything...
来源：https://stackoverflow.com/questions/1121807/to-understand-recursive-grep-in-xargs