July 2002
Beginner to intermediate
96 pages
1h 53m
English
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Chapter 39. Environment Variables
Perl uses the following environment variables. This does not include the environment variables used by library packages.
HOMEUsed if chdir has no argument.
LC_ALL, LC_CTYPE, LC_COLLATE, LC_NUMERIC, PERL_BADLANG, LANGUAGE, LANGControls how Perl handles data specific to particular natural languages.
LOGDIRUsed if chdir has no argument and
HOMEis not set.PATHUsed in executing subprocesses, and in finding the Perl script if
-Sis used.PERL5LIBA colon-separated list of directories to search for Perl library files before looking in the standard library and the current directory.
PERL5DBThe command to get the debugger code.
PERL_ENCODINGUsed by
use encodingwithout an explicit encoding name.PERLIOA space- or colon-separated list of I/O layers. This list becomes the default for all I/O operations.
PERLLIBUsed instead of
PERL5LIBifPERL5LIBis not defined.PERL5OPTInitial (command-line) options for Perl.
PERL5SHELLThe shell that Perl must use internally for executing system commands. Microsoft ports only.
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