The OpenNET Project / Index page

[ новости /+++ | форум | теги | ]

Интерактивная система просмотра системных руководств (man-ов)

 ТемаНаборКатегория 
 
 [Cписок руководств | Печать]

FindBin (3)
  • FindBin (3) ( Solaris man: Библиотечные вызовы )
  • >> FindBin (3) ( Разные man: Библиотечные вызовы )
  •  

    NAME

    FindBin - Locate directory of original perl script
     
    

    SYNOPSIS

     use FindBin;
     use lib "$FindBin::Bin/../lib";
    
    

     or
    
    

     use FindBin qw($Bin);
     use lib "$Bin/../lib";
    
    
     

    DESCRIPTION

    Locates the full path to the script bin directory to allow the use of paths relative to the bin directory.

    This allows a user to setup a directory tree for some software with directories "<root>/bin" and "<root>/lib", and then the above example will allow the use of modules in the lib directory without knowing where the software tree is installed.

    If perl is invoked using the -e option or the perl script is read from "STDIN" then FindBin sets both $Bin and $RealBin to the current directory.  

    EXPORTABLE VARIABLES

     $Bin         - path to bin directory from where script was invoked
     $Script      - basename of script from which perl was invoked
     $RealBin     - $Bin with all links resolved
     $RealScript  - $Script with all links resolved
    
    
     

    KNOWN ISSUES

    If there are two modules using "FindBin" from different directories under the same interpreter, this won't work. Since "FindBin" uses a "BEGIN" block, it'll be executed only once, and only the first caller will get it right. This is a problem under mod_perl and other persistent Perl environments, where you shouldn't use this module. Which also means that you should avoid using "FindBin" in modules that you plan to put on CPAN. To make sure that "FindBin" will work is to call the "again" function:

      use FindBin;
      FindBin::again(); # or FindBin->again;
    
    

    In former versions of FindBin there was no "again" function. The workaround was to force the "BEGIN" block to be executed again:

      delete $INC{'FindBin.pm'};
      require FindBin;
    
    
     

    KNOWN BUGS

    If perl is invoked as

       perl filename
    
    

    and filename does not have executable rights and a program called filename exists in the users $ENV{PATH} which satisfies both -x and -T then FindBin assumes that it was invoked via the $ENV{PATH}.

    Workaround is to invoke perl as

     perl ./filename
    
    
     

    AUTHORS

    FindBin is supported as part of the core perl distribution. Please send bug reports to <perlbug@perl.org> using the perlbug program included with perl.

    Graham Barr <gbarr@pobox.com> Nick Ing-Simmons <nik@tiuk.ti.com>  

    COPYRIGHT

    Copyright (c) 1995 Graham Barr & Nick Ing-Simmons. All rights reserved. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.


     

    Index

    NAME
    SYNOPSIS
    DESCRIPTION
    EXPORTABLE VARIABLES
    KNOWN ISSUES
    KNOWN BUGS
    AUTHORS
    COPYRIGHT


    Поиск по тексту MAN-ов: 




    Партнёры:
    PostgresPro
    Inferno Solutions
    Hosting by Hoster.ru
    Хостинг:

    Закладки на сайте
    Проследить за страницей
    Created 1996-2024 by Maxim Chirkov
    Добавить, Поддержать, Вебмастеру