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NAME

     getcwd - get pathname of current working directory



SYNOPSIS
         use Cwd;
         $dir = cwd;

         use Cwd;
         $dir = getcwd;

         use Cwd;
         $dir = fastgetcwd;

         use Cwd 'chdir';
         chdir "/tmp";
         print $ENV{'PWD'};

         use Cwd 'abs_path';     # aka realpath()
         print abs_path($ENV{'PWD'});

         use Cwd 'fast_abs_path';
         print fast_abs_path($ENV{'PWD'});




DESCRIPTION
     The getcwd() function re-implements the getcwd(3) (or
     getwd(3)) functions in Perl.

     The abs_path() function takes a single argument and returns
     the absolute pathname for that argument.  It uses the same
     algorithm as getcwd().  (Actually, getcwd() is
     abs_path("."))  Symbolic links and relative-path components
     ("." and "..") are resolved to return the canonical
     pathname, just like realpath(3).  Also callable as
     realpath().

     The fastcwd() function looks the same as getcwd(), but runs
     faster.  It's also more dangerous because 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 security, if everything
     appears to have worked, the fastcwd() function will check
     that it leaves you in the 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.

     The fast_abs_path() function looks the same as abs_path(),
     but runs faster.  And like fastcwd() is more dangerous.


     The cwd() function looks the same as getcwd and fastgetcwd
     but is implemented using the most natural and safe form for
     the current architecture. For most systems it is identical
     to `pwd` (but without the trailing line terminator).

     It is recommended that cwd (or another *cwd() function) is
     used in all code to ensure portability.

     If you ask to override your chdir() built-in function, then
     your PWD environment variable will be kept up to date.  (See
     the Overriding Builtin Functions entry in the perlsub
     manpage.) Note that it will only be kept up to date if all
     packages which use chdir import it from Cwd.









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Created 1996-2024 by Maxim Chirkov

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