Cwd man page on MirBSD

Man page or keyword search:  
man Server   6113 pages
apropos Keyword Search (all sections)
Output format
MirBSD logo
[printable version]



Cwd(3p)		Perl Programmers Reference Guide	  Cwd(3p)

NAME
     Cwd - get pathname of current working directory

SYNOPSIS
	 use Cwd;
	 my $dir = getcwd;

	 use Cwd 'abs_path';
	 my $abs_path = abs_path($file);

DESCRIPTION
     This module provides functions for determining the pathname
     of the current working directory.	It is recommended that
     getcwd (or another *cwd() function) be used in all code to
     ensure portability.

     By default, it exports the functions cwd(), getcwd(),
     fastcwd(), and fastgetcwd() (and, on Win32, getdcwd()) into
     the caller's namespace.

     getcwd and friends

     Each of these functions are called without arguments and
     return the absolute path of the current working directory.

     getcwd
	     my $cwd = getcwd();

	 Returns the current working directory.

	 Re-implements the getcwd(3) (or getwd(3)) functions in
	 Perl.

     cwd
	     my $cwd = cwd();

	 The cwd() is the most natural form for the current
	 architecture. For most systems it is identical to `pwd`
	 (but without the trailing line terminator).

     fastcwd
	     my $cwd = fastcwd();

	 A more dangerous version of getcwd(), but potentially
	 faster.

	 It might conceivably chdir() you out of a directory that
	 it can't chdir() you back into.  If fastcwd encounters a
	 problem it will return undef but will probably leave you
	 in a different directory.  For a measure of extra secu-
	 rity, if everything appears to have worked, the
	 fastcwd() function will check that it leaves you in the

perl v5.8.8		   2005-02-05				1

Cwd(3p)		Perl Programmers Reference Guide	  Cwd(3p)

	 same directory that it started in. If it has changed it
	 will "die" with the message "Unstable directory path,
	 current directory changed unexpectedly". That should
	 never happen.

     fastgetcwd
	   my $cwd = fastgetcwd();

	 The fastgetcwd() function is provided as a synonym for
	 cwd().

     getdcwd
	     my $cwd = getdcwd();
	     my $cwd = getdcwd('C:');

	 The getdcwd() function is also provided on Win32 to get
	 the current working directory on the specified drive,
	 since Windows maintains a separate current working
	 directory for each drive.  If no drive is specified then
	 the current drive is assumed.

	 This function simply calls the Microsoft C library
	 _getdcwd() function.

     abs_path and friends

     These functions are exported only on request.  They each
     take a single argument and return the absolute pathname for
     it.  If no argument is given they'll use the current working
     directory.

     abs_path
	   my $abs_path = abs_path($file);

	 Uses the same algorithm as getcwd().  Symbolic links and
	 relative-path components ("." and "..") are resolved to
	 return the canonical pathname, just like realpath(3).

     realpath
	   my $abs_path = realpath($file);

	 A synonym for abs_path().

     fast_abs_path
	   my $abs_path = fast_abs_path($file);

	 A more dangerous, but potentially faster version of
	 abs_path.

perl v5.8.8		   2005-02-05				2

Cwd(3p)		Perl Programmers Reference Guide	  Cwd(3p)

     $ENV{PWD}

     If you ask to override your chdir() built-in function,

       use Cwd qw(chdir);

     then your PWD environment variable will be kept up to date.
     Note that it will only be kept up to date if all packages
     which use chdir import it from Cwd.

NOTES
     +	 Since the path seperators are different on some operat-
	 ing systems ('/' on Unix, ':' on MacPerl, etc...) we
	 recommend you use the File::Spec modules wherever porta-
	 bility is a concern.

     +	 Actually, on Mac OS, the "getcwd()", "fastgetcwd()" and
	 "fastcwd()" functions	are all aliases for the "cwd()"
	 function, which, on Mac OS, calls `pwd`. Likewise, the
	 "abs_path()" function is an alias for "fast_abs_path()".

AUTHOR
     Originally by the perl5-porters.

     Maintained by Ken Williams <KWILLIAMS@cpan.org>

COPYRIGHT
     Copyright (c) 2004 by the Perl 5 Porters.	All rights
     reserved.

     This program is free software; you can redistribute it
     and/or modify it under the same terms as Perl itself.

     Portions of the C code in this library are copyright (c)
     1994 by the Regents of the University of California.  All
     rights reserved.  The license on this code is compatible
     with the licensing of the rest of the distribution - please
     see the source code in Cwd.xs for the details.

SEE ALSO
     File::chdir

perl v5.8.8		   2005-02-05				3

[top]

List of man pages available for MirBSD

Copyright (c) for man pages and the logo by the respective OS vendor.

For those who want to learn more, the polarhome community provides shell access and support.

[legal] [privacy] [GNU] [policy] [cookies] [netiquette] [sponsors] [FAQ]
Tweet
Polarhome, production since 1999.
Member of Polarhome portal.
Based on Fawad Halim's script.
....................................................................
Vote for polarhome
Free Shell Accounts :: the biggest list on the net