Document PERL6LIB

lib/Language/5to6.pod

@@ -1054,6 +1054,25 @@ e.g.:
     my @lines = "test-file".IO.slurp.split(/\n/);
     say @lines.elems;    #-> 4
 
+=head2 Environment variables
+
+=head3 Perl module library path
+
+In Perl5 one of the environment variables to specify extra search paths for
+Perl modules is C<PERL5LIB>.
+
+    $ PERL5LIB=/some/module/lib perl program.pl
+
+In Perl6 this is similar, one merely needs to change a number!  As you
+probably guessed, you just need to use C<PERL6LIB>:
+
+    $ PERL6LIB=/some/module/lib perl6 program.p6
+
+As with Perl5, if you don't specify C<PERL6LIB>, you need to specify the
+library path within the program via the C<use lib> pragma:
+
+    use lib '/some/module/lib'
+
 =head2 Misc.
 
 =head3 C<dump>