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Full Discussion: Question about the system() function in C
Top Forums Programming Question about the system() function in C Post 302255287 by jim mcnamara on Thursday 6th of November 2008 06:45:59 AM
Old 11-06-2008
The answer in bytes comes from:
Code:
getconf ARG_MAX

it is system dependent

Edit:
Note that ARG_MAX also counts the number of bytes used in environmental variables. So it is argument bytes + env bytes
Last edited by jim mcnamara; 11-06-2008 at 08:35 AM..
 

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LEARN ABOUT BSD

getconf

GETCONF(1)							 Debian GNU/Linux							GETCONF(1)

NAME

       getconf - Query system configuration variables

SYNOPSIS

       getconf -a

       getconf [-v specification] system_var

       getconf [-v specification] path_var pathname

DESCRIPTION

       -a

	       Displays all configuration variables for the current system
	       and their values.

       -v

	       Indicate the specification and version for which to obtain
	       configuration variables.

       system_var

	       A system configuration variable, as defined by sysconf(3) or
	       confstr(3).

       path_var

	       A system configuration variable as defined by pathconf(3). This
	       must be used with a pathname.

AUTHOR

       getconf was written by Roland McGrath for the GNU C Library

       This man page was written by Ben Collins <bcollins@debian.org> for the Debian GNU/Linux system.

SEE ALSO

       sysconf(3), pathconf(3), confstr(3)

3rd Berkeley Distribution					      squeeze								GETCONF(1)
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