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Full Discussion: problem accessing Multiple Variables from C Program to a Shell script
Top Forums Shell Programming and Scripting problem accessing Multiple Variables from C Program to a Shell script Post 302234889 by jim mcnamara on Wednesday 10th of September 2008 04:56:16 PM
Old 09-10-2008
one second thought: This has to be homework.

export the variables in shell script - in C call getenv() to retrieve the variable's value.

Code:
export plpl="SOMEVALUE"

Code:
#include <unistd.h>
..........
........
printf("%s\n", getenv("plpl");

 

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LEARN ABOUT DEBIAN

cgiwrap_getenv

cgiwrap_getenv(3)						   cgi/cgiwrap.h						 cgiwrap_getenv(3)

NAME

       cgiwrap_getenv  - the wrapper for getenv

SYNOPSIS

       #include <cgi/cgiwrap.h>

       NEOERR *cgiwrap_getenv (const char *k, char **v);

ARGUMENTS

       k - the environment variable to lookup

DESCRIPTION

       cgiwrap_getenv  wraps  the  getenv  function for access to environment variables, which are used to pass data to CGI scripts.  This version
       differs from the system getenv in that it makes a copy of the value it returns, which gets around problems when wrapping  this  routine	in
       garbage collected/reference counted languages by moving the ownership of the data to the calling function.

RETURN VALUE

       v - a newly allocated copy of the value of that variable, or
       NULL if not found.

SEE ALSO

       cgiwrap_iterenv(3),  cgiwrap_putenv(3),	cgiwrap_init_emu(3),  cgiwrap_writef(3), cgiwrap_init_std(3), cgiwrap_writevf(3), cgiwrap_read(3),
       cgiwrap_write(3), cgiwrap_getenv

ClearSilver							   12 July 2007 						 cgiwrap_getenv(3)
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