Cwd - get pathname of current working directory

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By default, it exports the functions cwd(), getcwd(), fastcwd(), and fastgetcwd() into the caller's namespace. Each of these functions are called without arguments and return the absolute path of the current working directory. It is recommended that cwd (or another *cwd() function) be used in <i>all</i> code to ensure portability.</p> <p>The cwd() is the most natural and safe form for the current architecture. For most systems it is identical to `pwd` (but without the trailing line terminator).</p> <p>The getcwd() function re-implements the getcwd(3) (or getwd(3)) functions in Perl.</p> <p>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 <code>die</code> with the message "Unstable directory path, current directory changed unexpectedly". That should never happen.</p> <p>The fastgetcwd() function is provided as a synonym for cwd().</p> <p>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). This function is also callable as realpath().</p> <p>The fast_abs_path() function looks the same as abs_path() but runs faster and, like fastcwd(), is more dangerous.</p> <p>If you ask to override your chdir() built-in function, then your PWD environment variable will be kept up to date. (See <a href="/5.6.2/perlsub#Overriding-Builtin-Functions">"Overriding Builtin Functions" in perlsub</a>.) Note that it will only be kept up to date if all packages which use chdir import it from Cwd.</p> </div> <div id="footer"> <p>Perldoc Browser is maintained by Dan Book (<a href="https://metacpan.org/author/DBOOK">DBOOK</a>). Please contact him via the <a href="https://github.com/Grinnz/perldoc-browser/issues">GitHub issue tracker</a> or <a href="mailto:dbook@cpan.org">email</a> regarding any issues with the site itself, search, or rendering of documentation.</p> <p>The Perl documentation is maintained by the Perl 5 Porters in the development of Perl. Please contact them via the <a href="https://github.com/Perl/perl5/issues">Perl issue tracker</a>, the <a href="https://lists.perl.org/list/perl5-porters.html">mailing list</a>, or <a href="https://kiwiirc.com/client/irc.perl.org/p5p">IRC</a> to report any issues with the contents or format of the documentation.</p> </div> </div> <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.5.1/jquery.slim.min.js" integrity="sha512-/DXTXr6nQodMUiq+IUJYCt2PPOUjrHJ9wFrqpJ3XkgPNOZVfMok7cRw6CSxyCQxXn6ozlESsSh1/sMCTF1rL/g==" crossorigin="anonymous"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.16.1/umd/popper.min.js" integrity="sha512-ubuT8Z88WxezgSqf3RLuNi5lmjstiJcyezx34yIU2gAHonIi27Na7atqzUZCOoY4CExaoFumzOsFQ2Ch+I/HCw==" crossorigin="anonymous"></script> <script src="https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/js/bootstrap.min.js" integrity="sha384-B4gt1jrGC7Jh4AgTPSdUtOBvfO8shuf57BaghqFfPlYxofvL8/KUEfYiJOMMV+rV" crossorigin="anonymous"></script> <script src="/js/highlight.pack.js"></script> <script>hljs.highlightAll();</script> </body> </html>

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Cwd - get pathname of current working directory - Perldoc Browser