10-20-2004
OpenVMS IPC and TCP/IP Programming
We have a requirement to port applications from Unix to HP Vax OpenVMS Server.
For this I need to self-educate on various IPC and networking APIs available in OpenVMS. I goggled a lot but could not find of how to implement Semaphores, Message Queues and all other forms of IPC available in Unix to VMS. Further more there are not a much beginner's tutorial on TCP/IP programming either for VMS.
It would be a pleasure if some one can help me out in anyform.
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LEARN ABOUT MOJAVE
file::spec::vms5.18
File::Spec::VMS(3pm) Perl Programmers Reference Guide File::Spec::VMS(3pm)
NAME
File::Spec::VMS - methods for VMS file specs
SYNOPSIS
require File::Spec::VMS; # Done internally by File::Spec if needed
DESCRIPTION
See File::Spec::Unix for a documentation of the methods provided there. This package overrides the implementation of these methods, not the
semantics.
The default behavior is to allow either VMS or Unix syntax on input and to return VMS syntax on output unless Unix syntax has been
explicity requested via the "DECC$FILENAME_UNIX_REPORT" CRTL feature.
canonpath (override)
Removes redundant portions of file specifications and returns results in native syntax unless Unix filename reporting has been enabled.
catdir (override)
Concatenates a list of file specifications, and returns the result as a native directory specification unless the Unix filename
reporting feature has been enabled. No check is made for "impossible" cases (e.g. elements other than the first being absolute
filespecs).
catfile (override)
Concatenates a list of directory specifications with a filename specification to build a path.
curdir (override)
Returns a string representation of the current directory: '[]' or '.'
devnull (override)
Returns a string representation of the null device: '_NLA0:' or '/dev/null'
rootdir (override)
Returns a string representation of the root directory: 'SYS$DISK:[000000]' or '/'
tmpdir (override)
Returns a string representation of the first writable directory from the following list or '' if none are writable:
/tmp if C<DECC$FILENAME_UNIX_REPORT> is enabled.
sys$scratch:
$ENV{TMPDIR}
Since perl 5.8.0, if running under taint mode, and if $ENV{TMPDIR} is tainted, it is not used.
updir (override)
Returns a string representation of the parent directory: '[-]' or '..'
case_tolerant (override)
VMS file specification syntax is case-tolerant.
path (override)
Translate logical name DCL$PATH as a searchlist, rather than trying to "split" string value of $ENV{'PATH'}.
file_name_is_absolute (override)
Checks for VMS directory spec as well as Unix separators.
splitpath (override)
($volume,$directories,$file) = File::Spec->splitpath( $path );
($volume,$directories,$file) = File::Spec->splitpath( $path,
$no_file );
Passing a true value for $no_file indicates that the path being split only contains directory components, even on systems where you can
usually (when not supporting a foreign syntax) tell the difference between directories and files at a glance.
splitdir (override)
Split a directory specification into the components.
catpath (override)
Construct a complete filespec.
abs2rel (override)
Attempt to convert an absolute file specification to a relative specification.
rel2abs (override)
Return an absolute file specification from a relative one.
COPYRIGHT
Copyright (c) 2004 by the Perl 5 Porters. All rights reserved.
This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
SEE ALSO
See File::Spec and File::Spec::Unix. This package overrides the implementation of these methods, not the semantics.
An explanation of VMS file specs can be found at <http://h71000.www7.hp.com/doc/731FINAL/4506/4506pro_014.html#apps_locating_naming_files>.
perl v5.18.2 2014-01-06 File::Spec::VMS(3pm)