such as z/OS (OS/390) or OS/400 (using the ILE, the PASE is ASCII-based)
the above material is similar to "Unix" but the code numbers change:
- LF eq \025 eq \x15 eq chr(21) eq CP-1047 21
- LF eq \045 eq \x25 eq \cU eq chr(37) eq CP-0037 37
+ LF eq \025 eq \x15 eq \cU eq chr(21) eq CP-1047 21
+ LF eq \045 eq \x25 eq chr(37) eq CP-0037 37
CR eq \015 eq \x0D eq \cM eq chr(13) eq CP-1047 13
CR eq \015 eq \x0D eq \cM eq chr(13) eq CP-0037 13
if ($^O ne 'VMS')
{$thisperl .= $Config{_exe} unless $thisperl =~ m/$Config{_exe}$/i;}
+=head2 Networking
+
+Don't assume that you can reach the public Internet.
+
+Don't assume that there is only one way to get through firewalls
+to the public Internet.
+
+Don't assume that you can reach yourself or any node by the name
+'localhost'. The same goes for '127.0.0.1'.
+
+Don't assume that any particular port (service) will respond.
+
+Don't assume that you can ping hosts and get replies.
+
=head2 Interprocess Communication (IPC)
In general, don't directly access the system in code meant to be
ReliantUNIX (formerly SINIX)
OpenBSD
OpenVMS (formerly VMS)
- Open UNIX (formerly Unixware) (since Perl 5.8.1/5.9.0)
+ Open UNIX (Unixware) (since Perl 5.8.1/5.9.0)
OS/2
OS/400 (using the PASE) (since Perl 5.8.1/5.9.0)
PowerUX