separator is '|' instead of ':'. The directory
specifications may use either VMS or Unix syntax.
-=head1 %ENV
-
-Reading the elements of the %ENV array returns the
-translation of the logical name specified by the key,
-according to the normal search order of access modes and
-logical name tables. If you append a semicolon to the
-logical name, followed by an integer, that integer is
-used as the translation index for the logical name,
-so that you can look up successive values for search
-list logical names. For instance, if you say
-
- $ Define STORY once,upon,a,time,there,was
- $ perl -e "for ($i = 0; $i <= 6; $i++) " -
- _$ -e "{ print $ENV{'foo'.$i},' '}"
-
-Perl will print C<ONCE UPON A TIME THERE WAS>.
-
-The %ENV keys C<home>, C<path>,C<term>, and C<user>
-return the CRTL "environment variables" of the same
-names, if these logical names are not defined. The
-key C<default> returns the current default device
-and directory specification, regardless of whether
-there is a logical name DEFAULT defined..
-
-Setting an element of %ENV defines a supervisor-mode logical
-name in the process logical name table. C<Undef>ing or
-C<delete>ing an element of %ENV deletes the equivalent user-
-mode or supervisor-mode logical name from the process logical
-name table. If you use C<undef>, the %ENV element remains
-empty. If you use C<delete>, another attempt is made at
-logical name translation after the deletion, so an inner-mode
-logical name or a name in another logical name table will
-replace the logical name just deleted. It is not possible
-at present to define a search list logical name via %ENV.
-
-In all operations on %ENV, the key string is treated as if it
-were entirely uppercase, regardless of the case actually
-specified in the Perl expression.
-
=head1 Perl functions
As of the time this document was last revised, the following
The FLAGS argument is ignored in all cases.
+=head1 Perl variables
+
+=item %ENV
+
+Reading the elements of the %ENV array returns the
+translation of the logical name specified by the key,
+according to the normal search order of access modes and
+logical name tables. If you append a semicolon to the
+logical name, followed by an integer, that integer is
+used as the translation index for the logical name,
+so that you can look up successive values for search
+list logical names. For instance, if you say
+
+ $ Define STORY once,upon,a,time,there,was
+ $ perl -e "for ($i = 0; $i <= 6; $i++) " -
+ _$ -e "{ print $ENV{'foo'.$i},' '}"
+
+Perl will print C<ONCE UPON A TIME THERE WAS>.
+
+The %ENV keys C<home>, C<path>,C<term>, and C<user>
+return the CRTL "environment variables" of the same
+names, if these logical names are not defined. The
+key C<default> returns the current default device
+and directory specification, regardless of whether
+there is a logical name DEFAULT defined..
+
+Setting an element of %ENV defines a supervisor-mode logical
+name in the process logical name table. C<Undef>ing or
+C<delete>ing an element of %ENV deletes the equivalent user-
+mode or supervisor-mode logical name from the process logical
+name table. If you use C<undef>, the %ENV element remains
+empty. If you use C<delete>, another attempt is made at
+logical name translation after the deletion, so an inner-mode
+logical name or a name in another logical name table will
+replace the logical name just deleted. It is not possible
+at present to define a search list logical name via %ENV.
+
+In all operations on %ENV, the key string is treated as if it
+were entirely uppercase, regardless of the case actually
+specified in the Perl expression.
+
+=item $?
+
+Since VMS status values are 32 bits wide, the value of C<$?>
+is simply the final status value of the last subprocess to
+complete. This differs from the behavior of C<$?> under Unix,
+and under VMS' POSIX environment, in that the low-order 8 bits
+of C<$?> do not specify whether the process terminated normally
+or due to a signal, and you do not need to shift C<$?> 8 bits
+to the right in order to find the process' exit status.
+
+=item $!
+
+The string value of C<$!> is that returned by the CRTL's
+strerror() function, so it will include the VMS message for
+VMS-specific errors. The numeric value of C<$!> is the
+value of C<errno>, except if errno is EVMSERR, in which
+case C<$!> contains the value of vaxc$errno. Setting C<$!>
+always sets errno to the value specified, and sets vaxc$errno
+to 4 (NONAME-F-NOMSG).
+
=head1 Revision date
This document was last updated on 16-Dec-1994, for Perl 5,
projects / p5sagit/p5-mst-13.2.git / blobdiff