http://www.perlmonks.org?node_id=535873


in reply to splitting directories

#! /usr/bin/env perl use strict; use warnings; die "usage: $0 <dir>" unless @ARGV == 1; chdir $ARGV[0] or die "chdir failed: $!"; my @files = grep { not /^(?:\.|\.\.)$/ } readdir '.'; my $i = 0; for (my $i = 0; @files; $i++) { mkdir $i or die "mkdir $i failed: $!"; for (splice @files, 0, 1000) { rename $_, "$i/$_" or die "rename $_ $i/$_ failed: $!"; } }

Adjust for win32 as needed.

For fun, perl6:

#! /usr/bin/env perl use v6; use fatal; # or is this default? die "usage: $*PROGRAM_NAME <dir>" unless @*ARGS == 1; chdir @*ARGS[0]; my @files = grep { $_ ne '.'&'..' } readdir '.'; loop (my $i = 0; @files; $i++) { mkdir $i; rename $_, "$i/$_ for splice @files, 0, 1000; }