With a million files to be removed, xargs rm will not remove all of the files in one invocation of rm. Furthermore, if any of the files to be removed have names containing whitespace characters, single quotes, double quotes, or backslashes, using xargs that way will not work.

If you need to use find to select a subset of files to be removed by name, size, date, etc., use:

Code:

find /path selection_criteria_operands -exec rm {} +

Using the find utility's -exec command {} \; executes command once for each selected file. Using the find utility's -exec command {} + executes command with groups of one or more file operands chosen such that system ARG_MAX limits will not be exceeded. (This last form matches what xargs tries to do, but doesn't suffer from the filename limitations that you run into by passing filenames through a pipe and having xargs try to find filename boundaries.)