Let's not forget the OP specifically said 'unix' rather than linux. Filenames with whitespace not being handled with xargs is certainly going to be a problem if this is supposed to be a generic solution. But if the whole file is enclosed in quotes when it has whitespace, rm will handle the argument list properly even if it went thru xargs: 
find /path/ -size 0 | perl -e 'while(<>) { chop; s/^(.*\s.*)$/\"$1\"/;
+ print "$_\n"; }' | xargs -n <whatever-filecount-limit> rm

[download]

-M

Free your mind

In reply to Re^5: UNIX command - remove 0 byte file by Moron
in thread UNIX command - remove 0 byte file by darrengan

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