From: "SSC_perl" <p...@surfshopcart.com> Octavian,
Thanks for the reply. >> So I tried the following: >> use lib "ss_files"; >> This also works, but iirc, I read that it won't work across all platforms. >> Is that correct? > > > This method also works, but to be equivalent with the first method it should > have been: > use lib "../ss_files"; Actually, that doesn't work. Adding "../" breaks the script. This means that the modules are not in the ../ss_files" directory. In the example that use FindBin you used a path like "$Bin/../ss_files". That path should have been "$Bin/ss_files" to be equivalent with just "ss_files". > If you change the current directory to be another directory, like /home/user > for example, it won't work, because it will search for modules in > /home/ss_files. The directory won't change once the script is installed. Both shop.cgi and the ss_files directory are in the surfshop directory and will always remain there. The surfshop directory could, in theory, be placed anywhere, but that shouldn't have any effect on shop.cgi calling the other files, no? I think you don't understand what "Current directory" means. :-) I've seen that the script has a .cgi extension, so it might be a CGI script which is ran by a web server only, but even CGI scripts may be ran manually, so here I try to explain again: Let's say you have the path: /home/user/surfshop If you always do: $ cd /home/user/surfshop $ ./shop.cgi Then the current directory is /home/user/surfshop, which is also the parent directory of the shop.cgi script. And you can use without any problem: use lib "ss_files"; Because it will search for the directory "ss_files" in the current directory. But if you will change the current directory to another one, and then run the script, using: $ cd / $ ./home/user/surfshop/shop.cgi Then the script it won't work if you use just: use lib "ss_files"; Because the current directory is just / and it will search for the directory with modules /ss_files. If you use FindBin, then the variable $Bin will get the path to the directory in which is placed the shop.cgi script, which is /home/user/surfshop, so if you use: use lib "$Bin/ss_files" it will always search for the directory with modules at /home/user/surfshop/ss_files, no matter what's the current directory where you started the script. If the script is a CGI script, the web server might get the path to this script and set the current directory to that path, so use lib "ss_files" may work, but I don't know if it is always the case... if all web servers that can run Perl CGI scripts do the same. So it is more secure to use FindBin. Octavian -- To unsubscribe, e-mail: beginners-unsubscr...@perl.org For additional commands, e-mail: beginners-h...@perl.org http://learn.perl.org/
