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Full Discussion: limit of command length
Top Forums UNIX for Dummies Questions & Answers limit of command length Post 302245909 by s.mascheck on Saturday 11th of October 2008 04:08:17 PM
Old 10-11-2008
Quote:
Originally Posted by era
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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page_util_quote(n)					      Parser generator tools						page_util_quote(n)

__________________________________________________________________________________________________________________________________________________

NAME
page_util_quote - page character quoting utilities SYNOPSIS
package require page::util::quote ?0.1? package require snit ::page::util::quote::unquote char ::page::util::quote::quote'tcl char ::page::util::quote::quote'tclstr char ::page::util::quote::quote'tclcom char _________________________________________________________________ DESCRIPTION
This package provides a few utility commands to convert characters into various forms. API
::page::util::quote::unquote char A character, as stored in an abstract syntax tree by a PEG processor (See the packages grammar::peg::interpreter, grammar::me, and their relations), i.e. in some quoted form, is converted into the equivalent Tcl character. The character is returned as the result of the command. ::page::util::quote::quote'tcl char This command takes a Tcl character (internal representation) and converts it into a string which is accepted by the Tcl parser, will regenerate the character in question and is 7bit ASCII. The string is returned as the result of this command. ::page::util::quote::quote'tclstr char This command takes a Tcl character (internal representation) and converts it into a string which is accepted by the Tcl parser and will generate a human readable representation of the character in question. The string is returned as the result of this command. The string does not use any unprintable characters. It may use backslash-quoting. High UTF characters are quoted to avoid problems with the still prevalent ascii terminals. It is assumed that the string will be used in a double-quoted environment. ::page::util::quote::quote'tclcom char This command takes a Tcl character (internal representation) and converts it into a string which is accepted by the Tcl parser when used within a Tcl comment. The string is returned as the result of this command. BUGS, IDEAS, FEEDBACK This document, will undoubtedly contain bugs and other problems. Please report such in the category page of the Tcllib SF Trackers [http://sourceforge.net/tracker/?group_id=12883]. Please also report any ideas for enhancements you may have. KEYWORDS
page, parser generator, quoting, text processing COPYRIGHT
Copyright (c) 2007 Andreas Kupries <andreas_kupries@users.sourceforge.net> page 1.0 page_util_quote(n)
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