Are you familiar with perl's -n and -p switches? http://perldoc.perl.org/perlrun.html#*-n* http://perldoc.perl.org/perlrun.html#*-n* Those "flt" lines could b

Are you familiar with perl's -n and -p switches? http://perldoc.perl.org/perlrun.html#*-n* http://perldoc.perl.org/perlrun.html#*-n* Those "flt" lines could be written perl -lpe 's|\s+| |gsi' file.txt find . | perl -ne 'if (-f) { print -s }' (-l chomps the incoming newlines, and puts them back on the output) Of course, "perl -ne" is longer than "flt", and I appreciate all this implicit use of $_ is not to everyone's tastes.