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Perl Language Reference Manual
by Larry Wall and others
Paperback (6"x9"), 724 pages
ISBN 9781906966027
RRP £29.95 ($39.95)

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A list of directories in which to look for Perl library files before looking in the standard library and the current directory. Any architecture-specific directories under the specified locations are automatically included if they exist (this lookup being done at interpreter startup time.)

If PERL5LIB is not defined, PERLLIB is used. Directories are separated (like in PATH) by a colon on Unixish platforms and by a semicolon on Windows (the proper path separator being given by the command perl -V:path_sep).

When running taint checks (either because the program was running setuid or setgid, or the -T or -t switch was specified), neither variable is used. The program should instead say:

use lib "/my/directory";
ISBN 9781906966027Perl Language Reference ManualSee the print edition