10-11-2008
I like the method with cpp to find the macros in the headers.
There you also write:
Quote:
SunOS 4.1.3 sun4c: ARG_MAX
Instead of ARG_MAX it's still NCARGS there, like in early unix variants.
However, SunOS 4 knows "sysconf(_SC_ARG_MAX)".
Quote:
IRIX 5.3 IP12: ARG_MAX / 5120
The run time limit (it can be changed with "systune") usually is higher, e.g. 20480.
Quote:
There are allegedly old systems with ARG_MAX set as low as 2048 or even 1024 bytes.
I don't believe there are systems after V7 with lower limits than 5120. V7 was released 1976 and is the first unix, which feels like systems we know today. (Predecessors like V4 or V6 still had 512 as limit.)
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LEARN ABOUT DEBIAN
ppi::token::quotelike
PPI::Token::QuoteLike(3pm) User Contributed Perl Documentation PPI::Token::QuoteLike(3pm)
NAME
PPI::Token::QuoteLike - Quote-like operator abstract base class
INHERITANCE
PPI::Token::QuoteLike
isa PPI::Token
isa PPI::Element
DESCRIPTION
The "PPI::Token::QuoteLike" class is never instantiated, and simply provides a common abstract base class for the five quote-like operator
classes. In PPI, a "quote-like" is the set of quote-like things that exclude the string quotes and regular expressions.
The subclasses of "PPI::Token::QuoteLike" are:
qw{} - PPI::Token::QuoteLike::Words
`` - PPI::Token::QuoteLike::Backtick
qx{} - PPI::Token::QuoteLike::Command
qr// - PPI::Token::QuoteLike::Regexp
<FOO> - PPI::Token::QuoteLike::Readline
The names are hopefully obvious enough not to have to explain what each class is. See their pages for more details.
You may note that the backtick and command quote-like are treated separately, even though they do the same thing. This is intentional, as
the inherit from and are processed by two different parts of the PPI's quote engine.
SUPPORT
See the support section in the main module.
AUTHOR
Adam Kennedy <adamk@cpan.org>
COPYRIGHT
Copyright 2001 - 2011 Adam Kennedy.
This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
The full text of the license can be found in the LICENSE file included with this module.
perl v5.10.1 2011-02-26 PPI::Token::QuoteLike(3pm)