Environment Variables

Perl uses the following environment variables:

• HOME
• Used if chdir has no argument.
• LOGDIR
• Used if chdir has no argument and HOME is not set.
• PATH
• Used in executing subprocesses, and in finding the Perl script if -S is used.
• PERL5LIB
• A colon-separated list of directories to look in for Perl library files before looking in the standard library and the current directory.
• PERL5DB
• The command to get the debugger code. Defaults to BEGIN { require 'perl5db.pl' }.
• PERLLIB
• Used instead of PERL5LIB if the latter is not defined.