Learning Mysql

Installing Perl modules under Mac OS X
Mac OS X comes with a Perl interpreter already installed, so after installing XAMPP
following the instructions earlier in this chapter, you’ll have two Perl interpreters on your system /usr/bin/perl and /Applications/xampp/xamppfiles/bin/perl. You’ll need to configure the DBI and CGI modules for at least one of these.
Since we use XAMPP for other parts of this book, our instructions will focus on it. You can still configure the system default Perl interpreter by typing /usr/bin/perl in place of /Applications/xampp/xamppfiles/bin/perl in our instructions, but we feel that you’ll have fewer difficulties if you work with the XAMPP installation.
For XAMPP, you need to do two things to ensure a hassle-free DBD MySQL driver installation. First, to allow the DBD installation process to test the installation process using the MySQL server, start XAMPP by typing sudo /Applications/xampp/xamppfiles/mampp start
Then create a symbolic link to the XAMPP MySQL socket file in the default MySQL
socket file location /tmp/mysql.sock, which is where Perl will expect to find it ln -s /Applications/xampp/xamppfiles/var/mysql/mysql.sock /tmp/mysql.sock
Some versions of XAMPP come with permission settings for the /Applications/xampp/
xamppfiles/lib/perl5 directory that don’t allow ordinary users to access it, causing modules to appear missing. To ensure that the permissions are correctly set, type sudo chmod u=rwx,g=rx,o=rx /Applications/xampp/xamppfiles/lib/perl5
We discussed permission settings in Restricting access to files and directories at the beginning of this chapter.
You can download and install the DBI module, the MySQL driver, and the CGI module for the XAMPP Perl installation by typing these commands in turn sudo /Applications/xampp/xamppfiles/bin/perl -MCPAN -e 'install DBI;'
$ sudo /Applications/xampp/xamppfiles/bin/perl -MCPAN -e 'install DBD::mysql;'
$ sudo /Applications/xampp/xamppfiles/bin/perl -MCPAN -e 'install CGI;'
You maybe prompted for the system root user password. You may also be prompted to configure the download locations with the message:
Are you ready for manual configuration [yes]
Unless you’re very sure of what you’re doing, just type

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