File::Path(3pm) Perl Programmers Reference Guide File::Path(3pm)NAMEFile::Path - create or remove directory trees
SYNOPSIS
use File::Path;
mkpath(['/foo/bar/baz', 'blurfl/quux'], 1, 0711);
rmtree(['foo/bar/baz', 'blurfl/quux'], 1, 1);
DESCRIPTION
The "mkpath" function provides a convenient way to create directories,
even if your "mkdir" kernel call won't create more than one level of
directory at a time. "mkpath" takes three arguments:
· the name of the path to create, or a reference to a list of paths
to create,
· a boolean value, which if TRUE will cause "mkpath" to print the
name of each directory as it is created (defaults to FALSE), and
· the numeric mode to use when creating the directories (defaults to
0777), to be modified by the current umask.
It returns a list of all directories (including intermediates, deter‐
mined using the Unix '/' separator) created.
If a system error prevents a directory from being created, then the
"mkpath" function throws a fatal error with "Carp::croak". This error
can be trapped with an "eval" block:
eval { mkpath($dir) };
if ($@) {
print "Couldn't create $dir: $@";
}
Similarly, the "rmtree" function provides a convenient way to delete a
subtree from the directory structure, much like the Unix command "rm
-r". "rmtree" takes three arguments:
· the root of the subtree to delete, or a reference to a list of
roots. All of the files and directories below each root, as well
as the roots themselves, will be deleted.
· a boolean value, which if TRUE will cause "rmtree" to print a mes‐
sage each time it examines a file, giving the name of the file, and
indicating whether it's using "rmdir" or "unlink" to remove it, or
that it's skipping it. (defaults to FALSE)
· a boolean value, which if TRUE will cause "rmtree" to skip any
files to which you do not have delete access (if running under VMS)
or write access (if running under another OS). This will change in
the future when a criterion for 'delete permission' under OSs other
than VMS is settled. (defaults to FALSE)
It returns the number of files successfully deleted. Symlinks are sim‐
ply deleted and not followed.
NOTE: There are race conditions internal to the implementation of
"rmtree" making it unsafe to use on directory trees which may be
altered or moved while "rmtree" is running, and in particular on any
directory trees with any path components or subdirectories potentially
writable by untrusted users.
Additionally, if the third parameter is not TRUE and "rmtree" is inter‐
rupted, it may leave files and directories with permissions altered to
allow deletion (and older versions of this module would even set files
and directories to world-read/writable!)
Note also that the occurrence of errors in "rmtree" can be determined
only by trapping diagnostic messages using $SIG{__WARN__}; it is not
apparent from the return value.
DIAGNOSTICS
· On Windows, if "mkpath" gives you the warning: No such file or
directory, this may mean that you've exceeded your filesystem's
maximum path length.
AUTHORS
Tim Bunce <Tim.Bunce@ig.co.uk> and Charles Bailey <bailey@new‐
man.upenn.edu>
perl v5.8.8 2001-09-21 File::Path(3pm)