A. The paths to some commonly used programs for CGI scripts, and others on.
Plesk are:
Path to Perl: /usr/bin/perl -w
Path to Sendmail: /usr/local/psa/qmail/bin/sendmail
Home Directory: /usr/local/psa/home/vhosts/yourdomain.com/

Cpanel are:
Path to Perl: /usr/bin/perl
Path to Sendmail: /usr/sbin/sendmail
Home Directory: /home/your_username/