use File::Find; # Print out all directories below current one. find sub { print "$File::Find::name " if -d }, "."; # Compute total space used by all files in listed directories. @dirs = @ARGV ? @ARGV : ('.'), my $sum = 0; find sub { $sum += -s }, @dirs; print "@dirs contained $sum bytes "; # Alter default behavior to go through symlinks # and visit subdirectories first. find { wanted => &myfunc, follow => 1, bydepth => 1 }, ".";
The File::Find
module's
find
function recursively descends directories. Its
first argument should be a reference to a function, and all following
arguments should be directories. The function is called on each
filename from the listed directories. Within that function, the
$_
variable is set to the basename of the current
filename visited, and the process's current working directory is by
default set to that directory. The package variable
$File::Find::name
is the full pathname of the
visited filename. An alternative calling convention takes as its first
argument a reference to a hash containing option specifications,
including "wanted
", "bydepth
",
"follow
", "follow_fast
",
"follow_skip
", "no_chdir
",
"untaint
", "untaint_pattern
",
and "untaint_skip
", as fully explained in the
online documentation. This module is also used by the standard
find2perl (1) translator program that
comes with Perl.